Question

valency is always a whole number give scientific reason​

Answer 1

Answer:

Valency is always a whole number because number of electrons donated or shared cannot be fractional. ... For example Cl atom , its valence electronic configuration is 3s​23p5 , it requires one electron to complete its octet. So, its valency is 1.

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Answer 2

A valency is always a whole number because the number of electrons donated or shared cannot be fractional.

Explanation:

• The valency of an atom is the number of electrons donated or taken up in the formation of a bond.
• The valency will always be a whole number as the definition of valency goes, it is the number of electrons and ions needed to give or take to attain a stable state.
• And since we can not transfer half or some part of an electron in any case, so it goes that the valency of an ion shall always be a whole number.