Questions
Which of the following allotropes represents prismatic sulphur?
detailed solution
Correct option is B
When rhombic sulphur is heated to 94.5°C, it transforms into monoclinic sulphur, a crystalline allotrope of sulphur. Only over 96°C can this type remain stable. At room temperature, it returns to its original rhombic shape. Its crystalline structure contains ring molecules.
Monoclinic sulphur is also known as prismatic sulphur since it is found as long, needle-like prisms.
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