Question

(ix) The valency of A=3 and B=2, then the compound
(a)A2B3 (B)A3B2 (c)A3B3 (d)A2B2​

Answer 1

A3B2

option b is the right option

Answer 2

Answer:

option A ) A2B3

Explanation:

you may know that when you combine two atoms, such as 0 and Fe you interchange them valencies. 0 is 2, and Fe has lots of valecies, but we are going to take 3,as an example

so it should be Fe2O3

you just have to do the same with elements A and B.

A is 3,B is 2; so:

A2B3 Is the correct answer