Question

An element B is non metal with 7 electrons in its valence shell, its valency is​

Answer 1

Answer:

It's valency will be 3.

Explanation:

AS THE VALENCY IS DETERMINED BY VALENCE ELECTRONS (NO. OF ELECTRONS IN LAST SHELL).

THE ELECTRONIC CONFIGURATION OF ELEMENT 'B' WILL BE 2,5.

AS THERE ARE 5 VALENCE ELECTRONS WE WILL SUBTRACT IT FROM 8 WE WILL GET 5.

THEREFORE, THE VALENCY OF THE ELEMENT WILL BE 3.

PLEASEE MARK AS BRAINLIEST .

THANK YOU.