Question

what is valency explain with an example?​

Answer 1

Hey !

VALENCY :

It is the capacity of atom of Single element to react and combine with particular number of atoms of another element.

In short, it's a measure of the combining capacity of atoms and Molecules

Eg:

Valency of Na:

Atomic No., Z = 11.

Electronic config - Written in terms of Electrons distributed in K,L,M shells :

$1s^{2}2s^{2}2p^{6}3s^{1}$.

If the Na loses 1 electron from the outermost orbit, it will attain the complete Octet configuration (Outermost shell of an atom having 8 electrons).

•°• The Valency of Na is 1.

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