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Valency of oxygen is generally two whereas sulphur shows valency of Two, Four, and six. Explain.

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Oxygen does not have a d orbital , only have electron in p-orbital so it cannot extend its valency beyond 2 but sulphur has a d-orbital and can also its valency of two, four and six.

Final answer:
Oxygen does not have a d orbital , only have electron in p-orbital so it cannot extend its valency beyond 2 but sulphur has a d-orbital and can also its valency of two, four and six.

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