Question

valency of noble gas is zero. give reason​

Answer 1

Answer:

Because they have stable electronic configuration that is they they have the outermost shell or valence complete due to which they neither lose electrons nor gain electrons, so their valency is zero.

Answer 2

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We know valency is a combining capacity of an element. Since there are no valence electrons in the valence shell which makes them stable, the valency of the noble gases is zero.