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MolSynapse / Question bank / p-Block Elements: Groups 15 and 16 / Sulphur allotropes, SO2, sulphuric acid, oxyacids of sulphur

NEET levelSingle correct optionDifficulty 1 of 3pn074

The sulphur allotrope that is stable at room temperature is

Amonoclinic sulphur ( $β$ -sulphur)
Bcolloidal sulphur
Crhombic sulphur ( $α$ -sulphur)
Dplastic sulphur

Answer: C

Rhombic sulphur is the stable allotrope below 369 K, so it is the form found at room temperature. Monoclinic sulphur is stable only above this transition temperature.

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