Chemistry · Periodicity of Elements and Periodic Properties

JEE Main 2025 — 24 January, Morning Shift — Question 37

The large difference between the melting and boiling points of oxygen and sulphur may be explained on the basis of:

Answer: B

Oxygen exists as diatomic molecule $O_2$ .

Sulphur exists as octatomic molecule $S_8$ .

Larger molecular size of $S_8$ results in stronger intermolecular forces.

Hence sulphur has much higher melting and boiling points than oxygen.

Therefore, the difference is due to atomicity.

Answer key and solution verified before publishing.

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