Write short note: Allotropes of sulphur.

Sulphur has two allotropes:

Rhombic Sulphur

i. It is stable at temperature lower than 369K.

ii. It possesses octahedral structure.

iii. It is insoluble in water but soluble to some extent in benzene and alcohol.

iv. It is quickly soluble in CS₂.

Monoclinic Sulphur

i. It is stable at temperature higher than 369K.

ii. It possesses needle-like structure.

iii. It is insoluble in water.

iv. It is soluble in CS₂.