Question

why is oxygen gas while sulphur is solid at room temperature
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Answer 1

The inter molecular forces in Oxygen are weak which causes it to exist as gas.On the other hand, Sulphur does not form strong S=S double bonds hence exists as a puckered structure held together by strong covalent bonds and exists as a polyatomic molecule. So, it exists as a Solid.

Answer 2

The intermolecular forces in Oxygen are weak van der Waals forces, which causes it to exist as gas. On the other hand, Sulphur does not form strong S=S double bonds hence exists as a puckered structure held together by strong covalent bonds and exists as a polyatomic molecule. So, it exists as a Solid.