Question

Which of the following shows allotropy?
A.Silver
B.Sulphur
C.Hydrogen
D.Nitrogen

Answer 1

This question gives the knowledge allotropy. Allotropy is defined as the property by which chemical substances can be expressed in two or more differentiable forms having the same physical states.

Complete Answer:
Allotropy is defined as the property by which chemical substances can be expressed in two or more differentiable forms having the same physical states. The allotropes of a substance differ only on the basis of bonding. The important example of allotrope is carbon. The allotropes of carbon are diamond, graphite, graphene and fullerenes. In diamonds, carbon atoms are interlinked together in tetrahedral lattice. In graphite, carbon atoms are interlinked together in hexagonal lattice. Fullerenes are also known as buckyballs in which carbon atoms are linked together in tubular, spherical or ellipsoidal transformations. The single sheet of graphite is known as graphene. The best known example of allotrope of carbon is diamond. Diamond is used in jewelry as well as for industrial applications.
The other important example of allotropy is sulphur. The allotropes of sulphur are cyclo-pentasulfur, cyclo-hexasulfur, cyclo-heptasulfur and cyclo-octasulphur.
Pressure, light and temperature leads to changes in allotropic forms. Allotropes differ on the basis of their physical and chemical properties. Allotropy generally occurs in chemical species or chemical elements. They may exist in simpler or very complicated forms.
From the above explanation, it is proved that sulphur shows allotropy.

Therefore, option A is correct.

Note: Always remember the concept of allotropy and its characteristics. Allotropy is the property by which chemical substances can be expressed in two or more differentiable forms having the same physical states.