p-Block Elements-I 2 Question 7
7. The element that shows greater ability to form $p \pi-p \pi$ multiple bonds, is
(2019 Main, 12 Jan II)
(a) $\mathrm{Ge}$
(b) $\mathrm{Si}$
(c) $\mathrm{Sn}$
(d) $\mathrm{C}$
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Solution:
- Carbon (C) has greatest ability to form stable $p \pi-p \pi$ multiple bonds. $2 p$-orbitals of this element participate in the process. The stability of multiple bonds of $\mathrm{C}$ is attributed to their closeness with $\mathrm{C}$-nucleus. Thus, the smaller size of $\mathrm{C}$ plays a significant role in the process.
