Question

$4{\mathrm{s}}^{2}4{\mathrm{p}}^1$ Identify the element that is diagonally a part of the next period in $p$-block.

• A. $\mathrm{Ge}$
• B. $\mathrm{Sn}$
• C. $\mathrm{In}$
• D. $\mathrm{Pb}$

Answer 1

The correct option is B

$\mathrm{Sn}$

1. Outer electronic configuration $4s^{2}4p^1$ corresponds to Gallium$\left(\mathrm{Ga}\right)$.
2. Thus outer electronic configuration for diagonal element will be: $5{\mathrm{s}}^{2}5{\mathrm{p}}^2$ which corresponds to Tin$\left(\mathrm{Sn}\right)$.
3. So, correct option is (B).