Question

Name three divalent cations with their formulae and valencies.

Answer 1

Divalent cations:

1. The cations having $+2$ charge as their valency is called divalent cations. Such cations are also named binary cations.
2. The atoms which lose two electrons from their valence shell become divalent cations.

Three divalent cations with their formulae and valences are:

1. Barium (Ba) - ${\mathrm{Ba}}^{2+}$having a valency$2$.
2. Magnesium (Mg) -${\mathrm{Mg}}^{2+}$, its valency is $2$.
3. Calcium (Ca) - ${\mathrm{Ca}}^{2+}$, its valency is $2$.