Q1) The valency of an element A is 3 and element B is 2. Write the formula of the compound forned by combination of A andB?

1 Answer
Apr 5, 2018

A_2B_3

Explanation:

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

So it would be Fe_2O_3

You just have to do the same with elements A and B.
A is 3, B is 2; so:

A_2B_3