MCQ
Q.
Fullerene is an allotrope of __________.
Correct Answer: D
The correct answer is carbon.
Key Points
- A fullerene is an allotrope of carbon whose molecule consists of carbon atoms connected by single and double bonds so as to form a closed or partially closed mesh, with fused rings of five to seven atoms.
- The molecule may be a hollow sphere, ellipsoid, tube, or many other shapes and sizes.
- Various allotropes of carbon are diamond, graphite, lonsdaleite, fullerene, C-540, C-70, amorphous carbon, carbon nanotube.
- Diamond and crystalline silicon are isomorphous because they both have a three-dimensional tetrahedral structure.
- Allotropy, the existence of a chemical element in two or more forms, which may differ in the arrangement of atoms in crystalline solids or in the occurrence of molecules that contain different numbers of atoms.
Additional Information
- When an element exists in more than one crystalline form, those forms are called allotropes; the two most common allotropes of carbon are diamond and graphite.
- One of the allotropic form of a carbon is a fullerene in which “carbon atoms” are “arranged in a sphere”.
- Each sphere has 60 carbon atoms and each carbon atom is linked by a single covalent.
- The fullerene is considered as purest allotrope of “carbon” because they have “smooth structure” without having dangling bonds.