The electronic configuration of an element B is 2, 8, 7 and it forms an ionic compound AB2
with another element A. What is the valency of element A?
with another element A. What is the valency of element A?
Add an Answer
More Questions From This User See All
Answers & Comments
Verified answer
The valency of A is 2valency of B = 1
and the formula = AB2
we know during writing fornulas the valency gets interchanged
therefore valency of A = 2
Verified answer
It is clear that the valency of B is 1The compound is AB2
While we write the formula, Valency of A goes to B and that of B to A.
Thus, Valency of A is 2
As metals are placed before in formula, Valency of A is +2