Q2 of 10 Page 46

Give a scientific reason for the following

The Valency of noble gases is zero.

The valency is the combining power of an element with the other atoms. The valency of noble gases is zero because its combining capacity is zero. These have a complete octet. Complete octet means that the outermost shell has complete 8 electrons. So noble gases cannot gain or lose electrons in a reaction. Hence the valency of noble gases is zero.


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