Question

$M^{3+}$ has electronic configuration as $\left[Ar\right]3d^{10}$, hence it lies in:

• A. $s$-block
• B. $p$-block
• C. $d$-block
• D. $f$-block

Answer 1

The correct option is B $p$-block

$M^{3+}:\left[Ar\right]3d^{10}$
$M:\left[Ar\right]3d^{10}4s^{2}4p^1$
It has valence p-orbitals electron so it belongs to p-block.