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Question

From the two allotropes of sulphur, Rhombic sulphur and Monoclinic sulphur, which is more stable?

A

Rhombic

B

Monoclinic

C

Both are equally stable

D

None

Medium

Solution

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Correct option is
A

Rhombic

Rhombic sulphur or sulphur is  yellow solid consisting of  puckered rings. The thermodynamically stable form at ordinary temperatures. 
Monoclinic sulphur is a yellow crystalline solid, consisting of  puckered rings. Only stable above , it reverts to -sulphur at room temperature.

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