Question

Arrange the following in the order given below:

Increasing polarising power of ${Na}^{+},{Ca}^{2+},{Mg}^{2+},{Al}^{3+}$ is :
${Ca}^{2+}<{Na}^{+}<{Mg}^{2+}<{Al}^{3+}$.
if true enter 1, else enter 0.

• A. 1

Answer 1

The correct option is A 1
Increasing polarizing power of ${Na}^{+},{Ca}^{2+},{Mg}^{2+},{Al}^{3+}$ is

${Ca}^{2+}<{Na}^{+}<{Mg}^{2+}<{Al}^{3+}$.

Higher is the charge density, higher is the polarizing power. Charge density is the ratio of charge to size.

Cations with high charge and small size have higher polarization power than cations with lower charge and higher size.