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Question

(a) What are noble gases? What is the characteristic of the electronic configuration of noble gases?
(b) What is the cause of chemical bonding (or chemical combination) of atoms of elements?

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Solution

(a) The elements in group 18 of the periodic table, which do not combine with other elements are known as noble gases. These elements are helium, neon, argon, krypton, xenon and radon. The important characteristic of the electronic configuration of the noble gases is that they have completely filled outermost shells or valence shells, which is the reason for the inertness of these elements.

(b) The atoms of elements undergo chemical bonding (or chemical combination) to attain the noble gas electronic configuration and become more stable. By chemical bonding, atoms share or transfer their electrons to make their outermost shells completely filled and thus attain stability.

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