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?

Apr 5, 2018

${A}_{2} {B}_{3}$

Explanation:

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

So it would be $F {e}_{2} {O}_{3}$

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

${A}_{2} {B}_{3}$