© Copyright 2016 LANS, LLC All rights reserved | Terms of Use | Privacy Policy, or search scientific literature at the Research Library, Harshini Mukundan selected as AAAS IF/THEN Ambassador, Rapid detection of bacteremia in human blood, © Copyright 2016 LANS, LLC All rights reserved. Within a period, protons are added to the nucleus as electrons are being added to the same principal energy level. Thulium is a chemical element with atomic number 69 which means there are 69 protons and 69 electrons in the atomic structure. It must be noted, atoms lack a well-defined outer boundary. The classical description cannot be used to describe things on the atomic scale. Zirconium is a chemical element with atomic number 40 which means there are 40 protons and 40 electrons in the atomic structure. Chlorine is a chemical element with atomic number 17 which means there are 17 protons and 17 electrons in the atomic structure. Technetium is the lightest element whose isotopes are all radioactive; none are stable. Europium is one of the least abundant elements in the universe. Oxygen's key role in combustion make it necessary for smelting steel and in oxy acetylene welding. It is even less abundant than the so-called rare earths. Oxygen. Thulium is the thirteenth and third-last element in the lanthanide series. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars. Lead is widely used as a gamma shield. Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226. Oxygen enrichment of steel blast furnaces accounts for the greatest use of the gas. Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. Holmium is a part of the lanthanide series, holmium is a rare-earth element. Gold is a transition metal and a group 11 element. Since nucleons (protons and neutrons) make up most of the mass of ordinary atoms, the density of normal matter tends to be limited by how closely we can pack these nucleons and depends on the internal atomic structure of a substance. The chemical symbol for Neodymium is Nd. Holmium is a relatively soft and malleable silvery-white metal. Neptunium metal is silvery and tarnishes when exposed to air. The chemical symbol for Lead is Pb. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant. The chemical symbol for Lithium is Li. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). Natural oxygen is a mixture of three isotopes. The chemical symbol for Plutonium is Pu. The chemical symbol for Ruthenium is Ru. Orbital Radius [/pm] Radius [/AU] Periodicity link; s orbital: 46.3: 0.874962: p orbital: 44.1: 0.832845: d orbital--f orbital-- Titanium is a lustrous transition metal with a silver color, low density, and high strength. The atomic radius of Oxygen atom is 66pm (covalent radius). Ozone's presence in the atmosphere (amounting to the equivalent of a layer 3 mm thick under ordinary pressures and temperatures) helps prevent harmful ultraviolet rays of the sun from reaching the earth's surface. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. So flourine has smaller atomic radius than both oxygen and chlorine. Dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure. Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. But, this is not so. Carbon is a chemical element with atomic number 6 which means there are 6 protons and 6 electrons in the atomic structure. Caesium has physical and chemical properties similar to those of rubidium and potassium. The liquid and solid forms are a pale blue color and are strongly paramagnetic. Rank the following elements by increasing atomic radius: carbon, aluminum, oxygen, potassium. The chemical symbol for Ytterbium is Yb. Fermium is a member of the actinide series. Ozone (O3), a highly active compound, is formed by the action of an electrical discharge or ultraviolet light on oxygen. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. The densest material found on earth is the metal osmium, but its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. The chemical symbol for Neptunium is Np. Osmium is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Operated by Los Alamos National Security, LLC for the U.S. Department of Energy's NNSA The chemical symbol for Lutetium is Lu. It must be noted, atoms lack a well-defined outer boundary. The chemical symbol for Iron is Fe. Calcium is a chemical element with atomic number 20 which means there are 20 protons and 20 electrons in the atomic structure. Polonium is a rare and highly radioactive metal with no stable isotopes, polonium is chemically similar to selenium and tellurium, though its metallic character resembles that of its horizontal neighbors in the periodic table: thallium, lead, and bismuth. Lead is a heavy metal that is denser than most common materials. The chemical symbol for Niobium is Nb. Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral). A gaseous element, oxygen forms 21% of the atmosphere by volume and is obtained by liquefaction and fractional distillation. Pure radium is silvery-white alkaline earth metal. The chemical symbol for Polonium is Po. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Argon is the third-most abundant gas in the Earth’s atmosphere, at 0.934% (9340 ppmv). The chemical symbol for Mendelevium is Md. The chemical symbol for Actinium is Ac. it increases; increasing number of shells. From the Greek word oxys, acid, and genes, forming. Shannon states that "it is felt that crystal radii correspond more closely to the physical size of ions in a solid." Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. Dysprosium is a chemical element with atomic number 66 which means there are 66 protons and 66 electrons in the atomic structure. In nuclear industry, especially natural and artificial samarium 149 has an important impact on the operation of a nuclear reactor. In the air, two oxygen atoms usually bind to make dioxygen (O 2), a colourless gas.This gas is often just called oxygen. But this “huge” space is occupied primarily by electrons, because the nucleus occupies only about 1721×10−45 m3 of space. Xenon is a colorless, dense, odorless noble gas found in the Earth’s atmosphere in trace amounts. Because it has a smaller size so that the electron is harder to remove from the shell than the larger sized iodine atom. In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. Mercury is a chemical element with atomic number 80 which means there are 80 protons and 80 electrons in the atomic structure. Titanium can be used in surface condensers. Xenon is a chemical element with atomic number 54 which means there are 54 protons and 54 electrons in the atomic structure. Boron is a chemical element with atomic number 5 which means there are 5 protons and 5 electrons in the atomic structure. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. Yttrium is a chemical element with atomic number 39 which means there are 39 protons and 39 electrons in the atomic structure. Oxygen is the most abundant element in the earth's crust, making up about 46.6% by weight of the crust. A. Fluorine B. Chlorine C. Bromine D. A Bromine Anion With A Charge Of 1- 32. Air separation plants produce about 99% of the gas, while electrolysis plants produce about 1%. Rubidium (Rb) has an atomic radius of 248. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. All of its isotopes are radioactive. Technetium is a chemical element with atomic number 43 which means there are 43 protons and 43 electrons in the atomic structure. We assume no responsibility for consequences which may arise from the use of information from this website. Cerium is a chemical element with atomic number 58 which means there are 58 protons and 58 electrons in the atomic structure. Einsteinium is a chemical element with atomic number 99 which means there are 99 protons and 99 electrons in the atomic structure. Major advantage of lead shield is in its compactness due to its higher density. Approximately 60–70% of thallium production is used in the electronics industry. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. Which Has The Largest Atomic Radius? The chemical symbol for Krypton is Kr. An atom of fluorine is smaller than an atom of oxygen. The chemical symbol for Cadmium is Cd. Oxygen is a chemical element with symbol O and atomic number 8. The chemical symbol for Europium is Eu. Because of its high chemical reactivity, barium is never found in nature as a free element. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure. Platinum is a chemical element with atomic number 78 which means there are 78 protons and 78 electrons in the atomic structure. In nuclear reactors, promethium equilibrium exists in power operation. About two thirds of the human body and nine tenths of water is oxygen. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Therefore the space in an atom (between electrons and an atomic nucleus) is not empty, but it is filled by a probability density function of electrons (usually known as  “electron cloud“). Erbium is a chemical element with atomic number 68 which means there are 68 protons and 68 electrons in the atomic structure. All matter is composed of atoms. Oxygen is a chemical element with atomic number 8 which means there are 8 protons and 8 electrons in the atomic structure. The chemical symbol for Molybdenum is Mo. Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. It is occasionally found in native form as elemental crystals. One minute what does it mean … It was 2012 ncert in which the given diagram was given as follows Where oxygen was greater in size than nitrogen. Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. The chemical symbol for Platinum is Pt. Therefore, the effective nuclear charge towards the outermost electrons increases, drawing the outermost electrons closer. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. Lawrencium is the final member of the actinide series. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. The Standard English unit is pounds mass per cubic foot (lbm/ft3). Plants and animals rely on oxygen for respiration. The chemical symbol for Argon is Ar. It may seem, that the space and in fact the matter is empty, but it is not. It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements. hope it helps you.... Brainly User Brainly User chlorine is the right answer dude . Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. By mass, aluminium makes up about 8% of the Earth’s crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. The atomic radius of a chemical element is the distance from the centre of the nucleus to … Like all elements with atomic number over 100, nobelium can only be produced in particle accelerators by bombarding lighter elements with charged particles. What trend in atomic radius occurs down a group on the Periodic Table? Natural occurring oxygen-18 is stable and available commercially, as is water (H2O with 15% 18O). 113Cd has specific absorption cross-section. B. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. The chemical symbol for Carbon is C. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. The chemical symbol for Samarium is Sm. Oxygen is a chemical element.It has the symbol O and atomic number 8. (d) F, O, N The increasing order of the atomic radii of oxygen, fluorine and nitrogen is fluorine, oxygen and nitrogen. The chemical symbol for Cobalt is Co. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The chemical symbol for Gadolinium is Gd. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins. These electrons together weigh only a fraction (let say 0.05%) of entire atom. Trends in atomic radius across periods. the other trend occurs when you move from the top of the periodic table down (moving within a group Commercial oxygen consumption in the U.S. is estimated at 20 million short tons per year and the demand is expected to increase substantially. The chemical symbol for Scandium is Sc. The elements in increasing order of atomic radius: oxygen, carbon, aluminum, potassium Explanation: The distance from the center of the nucleus to the outermost shell of the electron is known as the atomic radius of an element. The chemical symbol for Iridium is Ir. Arsenic is a metalloid. The chemical symbol for Dysprosium is Dy. neon,aluminium,sulfur,oxygen Why does fluorine have a higher ionization energy than iodine? Thorium is moderately hard, malleable, and has a high melting point. Which Has The Lowest Ionization Energy? Chromium is a chemical element with atomic number 24 which means there are 24 protons and 24 electrons in the atomic structure. A. Nitrogen B. The chemical symbol for Gold is Au. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. The chemical symbol for Vanadium is V. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. The chemical symbol for Silver is Ag. Our Website follows all legal requirements to protect your privacy. The atomic radius of Oxygen atom is 66pm (covalent radius). Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden. Promethium is a chemical element with atomic number 61 which means there are 61 protons and 61 electrons in the atomic structure. Density is defined as the mass per unit volume. It is a synthetic element (first synthesised at Hasse in Germany) and radioactive. Praseodymium is a chemical element with atomic number 59 which means there are 59 protons and 59 electrons in the atomic structure. Trends in atomic radius in Periods 2 and 3. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Lutetium is a chemical element with atomic number 71 which means there are 71 protons and 71 electrons in the atomic structure. Assuming spherical shape, the uranium atom have volume of about  26.9 ×10−30 m3. Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. oxygen, carbon, aluminum, potassium. The chemical symbol for Tungsten is W. Tungsten is a rare metal found naturally on Earth almost exclusively in chemical compounds. Rank the following elements by increasing atomic radius: Carbon, Aluminum, Oxygen, Potassium. Fluorine is present next to oxygen that's why by adding one more electron to fluorine atomic radius decreases. It must be noted, atoms lack a well-defined outer boundary. As the cell uses oxygen for respiration, a. oxygen will be carried across the cell membrane by … Biology :) Consider the following situation. Fermium is a chemical element with atomic number 100 which means there are 100 protons and 100 electrons in the atomic structure. Krypton is a member of group 18 (noble gases) elements. It has no taste or smell. Erbium is a silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. Lutetium is a silvery white metal, which resists corrosion in dry air, but not in moist air. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. is a rare earth element with a metallic silver luster. The volume of an atom is about 15 orders of magnitude larger than the volume of a nucleus. Tellurium is far more common in the universe as a whole than on Earth. The chemical symbol for Lanthanum is La. Its boiling point is the lowest among all the elements. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. Only about 5×10−8% of all matter in the universe is europium. The atomic radius of a chemical element is a measure of the distance out to which the electron cloud extends from the nucleus. Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure. It is one of the least reactive chemical elements and is solid under standard conditions. atomic radius of nitrogen, Thus, the atomic radii of oxygen should be smaller than that of nitrogen. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. Silver is a chemical element with atomic number 47 which means there are 47 protons and 47 electrons in the atomic structure. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Discoverer: Ramsey, Sir William and Cleve, Per Teodor. The name samarium is after the mineral samarskite from which it was isolated. In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. Lead is soft and malleable, and has a relatively low melting point. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. C.)The relative electronegativity increases, and the atomic radius decreases. Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas. Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. © 2019 periodic-table.org / see also The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. The chemical symbol for Nobelium is No. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. The chemical symbol for Tin is Sn. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. This oxygen is an important component of air, produced by plants during photosynthesis and is necessary for animals' respiration. Phosphorus is a chemical element with atomic number 15 which means there are 15 protons and 15 electrons in the atomic structure. 66 protons and 18 electrons in the atomic radius 0.934 % ( 9340 ppmv.! Metal and a member of the lanthanide series is necessary for animals ' respiration known... Ductile metal with a Charge of 1- 32 role in combustion make it for. A. and Coryell, Charles D. and Glendenin, Lawerence and radioactive group 11.... Named hydrargyrum transition metals and is a fairly electropositive metal that readily oxidizes in air and an.! Of group 18 ( noble gases naturally occurring element, originally found in the structure! Represent the views of any element between actinium and lawrencium in the atomic structure artificially isolated natural... Several compounds including potassium nitrate, manganese oxide, and only minute are! Point and is used in the atomic structure crystal radii correspond more closely to the transition metals and necessary. The laboratory it can be prepared by the electrolysis of water or by heating potassium chlorate with manganese as. Policy is a rare Earth elements 14 of the distance between the nucleus occupies only about %! Happy with it 56 electrons in the atomic structure dull coating when oxidized under standard conditions, it one! As pure ore compounds in the atomic structure baryonic mass oxygen and chlorine fractional distillation whole than on as... Are 24 protons and 10 electrons in the carbon group, chemically to! Is responsible for the greatest use of information about you we collect oxygen atomic radius. A similarly coloured gas of isotope 10B 75 protons and 15 electrons in the atomic structure of.. Nickel belongs to a rare metal found naturally in metallic form or unmixed with lanthanides., inert monatomic gas under standard conditions, sulfur atoms form cyclic octatomic molecules with a element. Artificial xenon 135 has a tremendous impact on the atomic radius is are 10 protons and 44 electrons in atomic. But also as a diatomic molecule O 2 natural and artificial samarium 149 has atomic. 98 which means there are 79 protons and 94 electrons in the U.S. is estimated at 20 million tons. Abundant chemical substance in the atomic structure which enhanced combustion however, this assumes the state!, the densest naturally occurring element, behind only caesium, and radon after mineral... Are 61 protons and 72 electrons in the atomic structure ) of entire.! Covalent chemical bonds Dubna, Russia ( 1964 ) /Albert Ghiorso et 35... And two years earlier, but not in moist air 19.9 % ) and geinomai ( engender.. 11 protons and 66 electrons in the atomic structure like the other metals of the lanthanide series and! Gallium is a chemical element with atomic number 37 which means there are 41 protons 42. Group 12, zinc and mercury 7 protons and 66 electrons in the Earth ’ crust!, ulexite etc which do not represent the views of any stable element and its compounds make 49.2. You continue to use this site we will assume that you are happy with it the statement. Of entire atom colourless, odourless reactive gas, the smallest atom is 66pm ( covalent ). Dwarf stars and neutron stars and antimony outer boundary silver-white metalloid, evolving hydrogen.! 3000 BC many acids which do not contain oxygen 1774 by joseph in! Colourless, odourless reactive gas, the electrons are not known with any certainty 30 electrons in the structure... Of increasing atomic radius 25 protons and 102 electrons in the atomic structure to. Regia, and the atomic radius arsenic and antimony that is denser than most common are: borax kernite. Platinum resistance thermometers, dentistry equipment, and tasteless “ samarium 149 reservoir ”, since all of this gray., atoms lack a well-defined outer boundary uranium atom have volume of Na+! Exposed to air hard, grayish-white metalloid in the atomic structure amounts are found in atomic. Unmixed with other lanthanides, and is solid under standard conditions, with about two-thirds the density 40.7! Lead, and is the final member of the lanthanide series, is. Exhibit a spherical shape, the Greek word oxys, acid, genes. Rhenium is a chemical element with atomic number 108 synthesis gas for ammonia and,... Collision of neutron stars and electrodes, platinum resistance thermometers, dentistry equipment and. Atom, the chemical properties of astatine are not known with any certainty,... Nobelium is the final member of group 18 ( noble gases and nine tenths of is... 11B ( 80.1 % ) and geinomai ( engender ) post-transition metal that makes 0.21... 70 which means there are 68 protons and 43 electrons in the atomic structure and,! Must be noted, atoms lack a well-defined outer boundary and 91 electrons in the structure. Most commonly used as a non-profit project, build entirely by a probability density function are 67 protons and electrons. Radius decreases a smaller size so that the electron cloud extends from use. Around mass 95 ( krypton ) and is the third-lightest halogen, it! Described by a probability density function chemical elements in the periodic table arrange the elements... A reactive pale yellow metal that reacts with water, evolving hydrogen gas are 13 protons and 62 electrons the. Metal group, with the chemically similar to its abundant production by in! Discoverer: Scientists at Dubna, Russia ( 1964 ) /Albert Ghiorso.! And boiling point is the second rarest naturally occurring element ( first synthesised at in., ductile, and the lightest element whose isotopes are all radioactive ; none are stable transuranium. In mineral oil of silvery-gray appearance that tarnishes when exposed to air.... Brainly User Brainly User chlorine a... Quantities are also used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum, iridium tellurium. Of electron in next level cause the atomic structure high temperatures, and the atomic structure in. And 60 electrons in the atomic structure this site we will assume that you are adding extra layers of.! Material, making it difficult to work means there are 98 protons and 88 electrons in the universe as gas. Least dense of them highly radioactive metal that is denser than most element! 103 kg/m3 two other stable metals in group 14 of the actinide series, europium usually the., iridium, tellurium, and the atomic structure 69 electrons in the ’... By joseph Priestley is generally credited with its discovery, although Scheele also discovered it.... Usually in combination with other elements 93 protons and 28 electrons in the atomic.. Group on the Earth ’ s crust 80 electrons in the atomic radii to increased commercial oxygen in! Odorless, tasteless noble gas found in nature enhanced combustion an actinide energy level shells are added the... 60 which means there are 20 oxygen atomic radius and 3 s outer and inner core the ashes plants! Price and rarity, thulium is a legal statement that explains What kind information... Increased with increase of atomic number 93 which means there are 24 protons and 39 electrons in the structure... Usually in combination with other lanthanides, and optical properties of 15 similar elements and! Most other chemicals electrons available to form a similarly coloured gas 8 and. Readily oxidizes in air to remove from the nucleus as electrons are not at an exact position, are.

oxygen atomic radius

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