Monoclinic sulphur.

Ans. Monoclinic sulphur is also known as prismatic or β – sulphur.

1. It is crystalline. The crystals are transparent, pale yellow and needle shaped.
2. It is soluble in carbon disulphide.
3. It is stable between 94.5⁰C and 120⁰C. It is crystallises from molten sulphur.
4. It is converted into rhombic sulphur when cooled below 94.5⁰C.