Question

The formula of the chloride of a metal ‘M’ is MCl₂. State the formula of its:
(i) Carbonate
(ii) Nitrate
(iii) Hydroxide

Answer 1

Answer:

Carbonate: MCO3

Nitrate: M(NO3)2

Hydroxide: M(OH)2

Answer 2

(i) Carbonate -- MCO₃

(ii) Nitrate -- M(NO ₃)₂

(iii) Hydroxide --M(OH)₂

Explanation:

The formula of the chloride of a metal ‘M’ is MCl₂. This show that the metal ion is M(+2) having +2 charge on it.  

When it bonds with carbonate ion which has equal but opposite charge, it's formula becomes MCO₃. The charges cancel out each other.

But NO₃ and OH have only minus one charge. So 2 ions will bond with one atom of the metal to form the nitrate and hydroxides of the metal.

(i) Carbonate -- MCO₃

(ii) Nitrate -- M(NO ₃)₂

(iii) Hydroxide --M(OH)₂