Question

is three and four the variable valency is of phosphorus​

Answer 1

Answer:

So they expand their valency and exhibit more than 1 valency in its compound. Phosphorus form PCl3 and PCl5 with chlorine. 3 is the normal valency of phosphorus.

Answer 2

$hello \: mate$

Question :- Is three and four the variable valency of phosphorus ?

Answer :- Three is the variable valence of Phosphorus.

I hope my answer helps you.