Question

The family of nonmetals having valency one. Write the names from the description.

Answer 1

Halogens:

• Halogens belong to p-block elements and
• are placed in Group-$17$.
• The general electronic configuration of halogen is $n{s}^{2}n{p}^5$.

Elements:

• The six nonmetallic elements constitute Group $17$ of the periodic table. The elements are described below:

1. Fluorine $\left(\mathrm{F}\right)$
2. Chlorine $\left(\mathrm{Cl}\right)$
3. Bromine $\left(\mathrm{Br}\right)$
4. Iodine $\left(\mathrm{I}\right)$
5. Astatine $\left(\mathrm{At}\right)$
6. Tennessine $\left(\mathrm{Ts}\right)$

• Halogens need one electron to attain a stable noble gas configuration and show the valency $1$.

Hence, halogens are the family of nonmetals having the valency of one.