Oxygen is divalent, but sulphur exhibits variable valency of $2,{\rm{ }}4{\rm{ }} and {\rm{ }}6$, because:

Sulphur is less electronegative than oxygen

Sulphur is bigger atom than oxygen

Ionisation potential of sulphur is more than oxygen

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NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Oxygen is divalent, but sulphur exhibits variable valency of

2,\mathrm{ }4\mathrm{ } and \mathrm{ }6

, because:

View answer and explanation

Correct option: D

Of the presence of

d

-orbitals in sulphur

Option D (Of the presence of

d

-orbitals in sulphur) is correct because sulphur has available d-orbitals in its valence shell, allowing it to expand its octet and exhibit variable valency.

NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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