Answer the following.Distinguish between rhombic sulfur and monoc… - Vidyadip

Question

Answer the following.Distinguish between rhombic sulfur and monoclinic sulfur.

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Answer

The following are the points of difference between rhombic (α-sulfur) and monoclinic ($\beta$ - sulfur):

Rhombic sulfur (α-sulfur)	Monoclinic sulfur (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 $2.06 g/cm^3$	4. Its density is $1.98 g/cm^3$
5. It is insoluble in water and soluble in $CS_2$	5. Soluble in $CS_2$
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 $CS_2$.	7. It is prepared from rhombic sulfur.

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