Question

Which allotrope of carbon is used in Ornaments?

Answer 1

Hint: We all have studied that every carbon atom forms a covalent bond at the four corners of the tetrahedron with the other four carbon atoms. And the element carbon exists in more than one form. In other words, we can say there are many common allotropes of carbon.

Complete answer:
Let us first completely understand about the allotropes of an element. When an element exists in its more than one crystalline form. These forms are called allotropes.
Carbon is one of those elements which has its more than one crystalline form. Every carbon atom forms a covalent bond at the four corners of the tetrahedron with the other four carbon atoms. Carbon is capable of forming its allotropes due to its valency. The common allotropes of carbon are “diamond” and “graphite”. One more allotropes of carbon exist which was found in recent decades i.e. “buckminsterfullerene” whose shape is like a ball and a “graphene” which have sheet-like structure.
Diamond is a well known allotrope of carbon which is used in ornaments. It is the hardest natural mineral. It is a nonconductor of electricity. It is useful for both industrial application and for making jewelry. Diamond is used for cutting, drilling, grinding and polishing in industries.

Note:
The other allotropes of carbon i.e. graphite have also wide applications. Graphite has planar structures and it conducts electricity due to the delocalization of the pi- bond electron below and above the plane. It is commonly used in pencil, electrical arc lamp electrodes etc.