Question

The transition temp. at which rhombic sulphur becomes monoclinic sulphur is:

• A. ${98}^{0}C$
• B. ${95.5}^{0}C$
• C. ${240}^{0}C$
• D. ${120}^{0}C$

Answer 1

The correct option is B ${95.5}^{0}C$

Allotropes of sulphur:-
$Rhombic\underset{<{95.5}^{\circ }C}{\stackrel{>{95.5}^{\circ }C}{\rightleftharpoons }}Monoclinic$