Answer the following.
Distinguish between rhombic sulfur and monoclinic sulfur.
The following are the points of difference between rhombic (α-sulfur) and monoclinic (β - sulfur):
|1. It is a pale yellow coloured solid.||1. It is bright yellow solid|
|2. It forms orthorhombic crystals||2. It forms needle-shaped monoclinic crystals|
|3. Its melting point is 385.8 K.||3. Its melting point is 393 K.|
|4. Its density is 2.06 g/cm3||4. Its density is 1.98 g/cm3|
|5. It is insoluble in water and soluble in CS2||5. Soluble in CS2|
|6. It is stable below 369 K and transforms to β-sulfur above this temperature||6. It is stable above 369 K and transforms into α-sulfur below this temperature.|
|7. It is prepared by the evaporation of rolls sulfur in CS2.||7. It is prepared from rhombic sulfur.|
Concept: Chemical Properties of Elements of Groups 16, 17 and 18
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