Question

State True or False.

The polarising power of $Z{n}^{2+}$ is greater than $C{a}^{2+}$ ions.

• A. True
• B. False

Answer 1

The correct option is A True

The polarizing power of $Z{n}^{2+}$ is greater than $C{a}^{2+}$ ions.

For the two ions of the same size and charge, one with a pseudo noble gas configuration (i.e 18 electrons outermost shell) will be more polarizing than a cation with noble gas configuration (i.e., 8 electrons outermost shell).

The electronic configuration of $Z{n}^{2+}$ ion is $\left[Ar\right]3d^{10}4s^0$. It has pseudo noble gas configuration.

The electronic configuration of $C{a}^{2+}$ ion is $\left[Ar\right]$. It has noble gas configuration.