Question

List the names of the allotropes of sulphur.

Answer 1

These can be packed together in two different ways – to form rhombic crystals and to form needle-shaped monoclinic crystals, as shown below: Below about 96 °C, rhombic sulfur is the more stable allotrope. On melting at about 118 °C, sulfur first forms a mobile, amber liquid containing $S_8$ rings.