![]() Isotopes have the same number of protons but they differ in the number of neutrons. Neon has a covalent radius (half of the distance between two atoms attached through covalent bonds) of 58 pm. Neon has a Van der Waals radius (half of the distance between two unbounded atoms) of 154 pm and an atomic radius of 38 pm. Like the melting point, the boiling point of neon is also very low, -246.046 0 C or 24.56 K. ![]() Neon has a melting point of -248.59 0 C or 24.56 K. Neon has a very low atomic density of 0.899 g/litre. But it shows electronegativity of 4.50 and 4.84 in Sanderson’s electronegativity scale and Allred Rochow’s electronegativity scale respectively. There is no electronegativity data of neon along with helium and argon in the Pauling scale. Neon Electronegativity according to Pauling Neon possesses an atomic weight of 20.1797 amu (atomic mass unit). ![]() Therefore, it has an atomic number of 10 because it has 10 protons with 10 neutrons in its nucleus. Neon is a p-block element because it has a full-filled p-orbital (2p 6). Neon is placed in the 2 nd period of the periodic table beside the halogen element, fluorine (F). Neon belongs to group 18 in the periodic table between helium (He) and argon (Ar). This word comes from the Greek word “neos”, meaning new. The chemical symbol of neon is Ne which is the first two alphabets of the word “neon”. Let us focus on the group and period of neon, with its isotopes, ionization energies, physical states, and many more relevant topics. It shows a glowing reddish-orange color in a vacuum. During cosmic nucleogenesis, it is generated from the alpha-capture fusion process occurring in stars. Neon is a very familiar element in the universe and solar system but rare on earth. Let us discuss the chemical properties of neon elaborately. Neon is a colorless monoatomic gas which is also known as a noble gas or inert gas. ![]()
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