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Q.

Oxygen is always divalent while sulphur can form 2, 4 and 6 bonds because

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a

Sulphur has vacant d-orbitas while oxygen does not

b

Sulphur has large atomic radius than oxygen

c

Oxygen is more electronegative than sulphur

d

Sulphur is more electronegative than oxygen

answer is B.

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Detailed Solution

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Electronic configuration of 'Oxygen' = [He]2s22p4.

Due to the absence of d-orbitals, Oxygen can exhibits a max. covalence '2'

Electronic configuration of 'S' = [Ne]3s23p43do

Due to the presence of empty d-orbitals the configuration is expanded and exhibit a max. covalence '6'

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