A metal M forms an oxide having the formula M 2 O 3 . It belongs to the third period in the modern periodic table. Write the atomic number and valency of the metal.

Question

Philoid · Accepted Answer

Since the Molecular formula of oxide of a metal (M) is M₂O₃ where valency of oxygen is 2 and the valency of the metal is 3. Since the metal has a valency of 3 and belongs to the third period, so the metal is Aluminium.

A metal M forms an oxide having the formula M2O3. It belongs to the third period in the modern periodic table. Write the atomic number and valency of the metal.

A metal M forms an oxide having the formula M₂O₃. It belongs to the third period in the modern periodic table. Write the atomic number and valency of the metal.