An element M forms the oxide M2O3 What will be the formula of its carbonate - Science - Atoms and Molecules

Question

An element M forms the oxide M2O3 What will be the formula of
its carbonate?

Nakush · Accepted Answer

According to the question the element M has a valency 3 and we
know that CO3 has a valency 2 So, if we cross the
valencies the formula formed
isM2(CO3)3

An element M forms the oxide M2O3. What will be the formula of its carbonate?