information about reactivity of 8th A group element
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Reactivity of group 8 A element (noble gases)
The elements are helium (z=2), neon =(10) Argon (18) krypton (36)Xenon (54)and Radon (86)
As per pur normal rules of electronic configuration and explained properties, noble gases have a valence of 0. They shells are filled with paired electrons in all energy states possible . There is no energy states available to get new electron. Neither the nucleus allow an electron to go out. The ionization is very high. They are inert and do not react with other metal in the periodic table. They are single atom molecules. It is found not long ago that they too forms compound. At least some of them do.
The electron in helium's are held closely to the nucleus as it is a very small atom. In radon the outermost electron are in the principles quantum number; n =6 that is very far. The radius of atoms increase proportional to square of n. Thus the outermost electron are loosely bound as compared to helium. So its ionization energy is less.
A few hundred compound of noble gases have been invented in the laboratory in the last two decades. Xenon, krypton, and Argon show very small reactivity. Due to radioactivity. Radon does not form as many compounds as xenon. Many decades ago in 20 century scientists including. Linus pauling have postulated and predicated regarding the compounds of natural gases.
The elements are helium (z=2), neon =(10) Argon (18) krypton (36)Xenon (54)and Radon (86)
As per pur normal rules of electronic configuration and explained properties, noble gases have a valence of 0. They shells are filled with paired electrons in all energy states possible . There is no energy states available to get new electron. Neither the nucleus allow an electron to go out. The ionization is very high. They are inert and do not react with other metal in the periodic table. They are single atom molecules. It is found not long ago that they too forms compound. At least some of them do.
The electron in helium's are held closely to the nucleus as it is a very small atom. In radon the outermost electron are in the principles quantum number; n =6 that is very far. The radius of atoms increase proportional to square of n. Thus the outermost electron are loosely bound as compared to helium. So its ionization energy is less.
A few hundred compound of noble gases have been invented in the laboratory in the last two decades. Xenon, krypton, and Argon show very small reactivity. Due to radioactivity. Radon does not form as many compounds as xenon. Many decades ago in 20 century scientists including. Linus pauling have postulated and predicated regarding the compounds of natural gases.
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