Question

Answer the following:

Write the general electronic configuration of halogens in the valence shell

Answer 1

Halogens: The elements present in group-17 of the modern periodic table are called halogens.

• Example: Fluorine $\left(\mathrm{F}\right)$, Chlorine $\left(\mathrm{Cl}\right),$ Bromine$\left(\mathrm{Br}\right)$, etc.
• The general electronic configuration of halogens in the valence shell is ${\mathrm{ns}}^2{\mathrm{np}}^5$ where n= period number.
• Example: Fluorine is situated in period=2. Therefore, the electronic configuration of Fluorine in the valence shell is $2{\mathrm{s}}^{2}2{\mathrm{p}}^5$.