Question

If the atomic number of an element is 33, it will be placed in the periodic table in the:

• A. first group
• B. second group
• C. fifth group
• D. seventh group

Answer 1

The correct option is C fifth group

$\begin{array}{c}\text{Atomic Number}z=33\\ \text{Electronic Configuration}=1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^3\\ \text{It is a p-block element with}3\text{electrons in p-orbital}\\ \text{Hence element Lies in}5A\text{group or}{15}^{\text{th}}\text{group}\end{array}$