Classification of Elements Part 1

Statement I is correct.The first ionization enthalpies are $\mathrm{B}=801\ \mathrm{kJ/mol}$, $\mathrm{Al}=577\ \mathrm{kJ/mol}$ and $\mathrm{Ga}=579\ \mathrm{kJ/mol}$.The decrease from $\mathrm{B}$ to $\mathrm{Al}$ is $801-577=224\ \mathrm{kJ/mol}$.The change from $\mathrm{Al}$ to $\mathrm{Ga}$ is $577$ to $579\ \mathrm{kJ/mol}$, i.e. no significant decrease (a small increase of $2\ \mathrm{kJ/mol}$).Thus, the decrease from $\mathrm{B}$ to $\mathrm{Al}$ is much larger than that from $\mathrm{Al}$ to $\mathrm{Ga}$.Statement II is correct.The electronic configuration of $\mathrm{Ga}$ is $[\mathrm{Ar}]\,3d^{10}\,4s^{2}\,4p^{1}$.Its $3d$ orbitals are completely filled.Therefore, statement II is true.Hence, both Statement I and Statement II are correct.The correct option is: Both the statements I and II are correct.