Question

give scientific reason :- valency of an element is always a whole number

Answer 1

see valency is something which a species can offers that means a species can give electron or it can receive that electron this shows its quantity in which it trade so elecrons no cant be fraction negative or decimal they can only be whole number

Answer 2

Answer:

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

Explanation:

The valency of an element is always a whole number.

• The quantity of electrons that are given or taken up during the creation of a bond determines an atom's valency.
• According to the definition of valency, which is the number of electrons and ions that must be added to or subtracted in order to achieve a stable state, the valency will always be a whole number.
• The valency of an ion must always be a whole number because we cannot, in any case, transfer a half or a portion of an electron.
• Consider the chlorine atom, and its valence electronic configuration is $3s^23p^5$. It needs one electron to complete its octet. Therefore, valency is $1$.

Hence, the valency of an element is always a whole number.

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