MolSynapsequestion bank

MolSynapse / Question bank / p-Block Elements: Groups 13 and 14 / Trends in group 13 and group 14

JEE Advanced levelSingle correct optionDifficulty 3 of 3pb125

Each carbon of $C X_{60}$ is bonded to three other carbons and, in the usual Kekule structure, takes part in exactly one double bond. The number of C-C single bonds in $C X_{60}$ is

A30
B90
C60
D120

Answer: C

Total C-C bonds

= 60 \times 3/2 = 90

. Each carbon has one double bond, giving

60/2 = 30

double bonds. Single bonds

= 90 - 30 = 60

.

Practice p-Block Elements: Groups 13 and 14 More on Trends in group 13 and group 14

Previous questionNext question

More questions on Trends in group 13 and group 14

Assertion (A): PbCl4 is less stable than PbCl2 and decomposes on gentle heating to PbCl2 and Cl2. Reason (R): The 6s^2 electrons of Pb are h... JEE Advanced level
Match Column I with Column II. Column I: (P) Tl, (Q) Sn, (R) graphite, (S) BF3. Column II: (1) most stable oxidation state is +1, (2) layere... JEE Advanced level
On the basis of the inert pair effect, the correct order of reducing power of the divalent ions is JEE Advanced level
Select the correct statement(s) about group 14. JEE Advanced level
Select the correct statement(s) about group 13. JEE Advanced level
Select the correct statement(s) about carbon allotropes. JEE Advanced level