1.

Oxygen is always divalent whereas sulphur can from 2,4 and 6 bonds. This is because

Answer»

oxygen is more ELECTRONEGATIVE than sulphur
sulphur CONTAINS d-orbitals whereas oxygen does not
sulphur has LARGER atomic radius than oxygen
sulphur is more electronegative than oxygen.

Solution :Sulphur contains d-orbitals and therefore, can expand its octet forming 2,4 and 6 bonds whereas oxygen does not contain d-orditals and is always divalent.


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