S C Kheterpal, S N Dhawan and, P N Kapil Solutions for Chapter: Chemical Bonding and Molecular Structure, Exercise 4: Competition Focus

The incorrectly matched pair among the following is :

Molecule $\to$ shape

Which one of the following molecule(s) is (are) expected to exhibit diamagnetic behaviour?

The correct statement(s) about ${\mathrm{O}}_3$ is (are)

Hydrogen bonding plays a central role in the following phenomena.

The compound (s) with two lone pairs of electrons on the central atom is (are)

According to molecular orbital theory

Which of the following pairs of ions is isoelectronic and isostructural?

You are given the following bond energy data

${\mathrm{E}}_{\mathrm{H}-\mathrm{H}} = 104.2 \mathrm{kcal} {\mathrm{mol}}^{-1} , {\mathrm{E}}_{\mathrm{F}-\mathrm{F}} = 36.6 \mathrm{kcal} {\mathrm{mol}}^{-1} , {\mathrm{E}}_{\mathrm{H}-\mathrm{F}} = 134.6 \mathrm{kcal} {\mathrm{mol}}^{-1}$

On the basis of this data, electronegativity of fluorine will be