The correct statements among the following are:

a. Fullerenes have dangling bonds.
b. Fullerenes are cage-like molecules.
c. Graphite is, thermodynamically, the most stable allotrope of carbon.
d. Graphite is slippery and hard and therefore used as a dry lubricant in machines.

1. a and b
2. b and c
3. c and d
4. a and d

Subtopic:   Structure & Properties of Allotropes of C |
 70%
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Match the species in Column-I with their corresponding hybridisation in Column-II:

Column-I (Species) Column-II (Hybridisation)
A. Boron in [B(OH)4]- i. sp2
B. Aluminium in [Al(H2O)6]3+ ii. sp3
C. Carbon in Buckminsterfullerene iii. sp3d2
D. Germanium in [GeCl6]2-

Codes:

 A   B   C   D 
1.  ii  iii  i iii
2.  i   i  iii  ii
3. iii  ii ii i
4.  i  iii  ii  iii
Subtopic:   Structure & Properties of Allotropes of C | Properties of Structure of SiO2 & Other Compounds |
 83%
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