Which of the following molecules of elements has the highest atomicity?

Oxygen

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Nitrogen

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Phosphorus

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Sulphur

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Solution

The correct option is D Sulphur
The number of atoms constituting a molecule is known as its atomicity. Each molecule of oxygen ( $O_{2}$ ) is composed of two oxygen atoms. So the atomicity of oxygen is 2 (diatomic).

On the other hand, nitrogen and phosphorus are triatomic and tetraatomic, respectively.

Among the given options, sulphur has the highest atomicity of 8 (octatomic molecule), since its molecule ( $S_{8}$ ) comprises of eight sulphur atoms.

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