Question

Which of the following is a tetra-atomic molecule?

• A.
  Ozone
• B.
  Nitrogen
• C.
  Sulphur
• D.
  Phosphorus

Answer 1

The correct option is D

Phosphorus
The chemical formulae of the given molecules are as follows:

$\begin{array}{cc}\text{Name}& \text{Chemical formula}\\ \text{Ozone}& O_3\\ \text{Nitrogen}& N_2\\ \text{Sulphur}& S_8\\ \text{Phosphorus}& P_4\end{array}$


Phosphorus $\left(P_4\right)$ is a tetra-atomic molecule because it contains four atoms.

Hence, the correct answer is option (d).