Which of the following molecules of elements has the highest atomicity?
The correct option is A Sulphur
The number of atoms constituting a molecule is known as its atomicity. Each molecule of oxygen (O2) 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 (S8) comprises of eight sulphur atoms.