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Chemical Bonding and Molecular Structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryChemical Bonding and Molecular Structure1 Mark
MCQ
If $\ce{N_b}$ is the number of electrons occupying bonding orbitals and $\ce{N_a},$ the number of electrons occupying the antibonding orbitals, then the molecule will be stable if :
  • ✓
    $\text{N}_\text{b} > \text{N}_\text{a}$
  • B
    $\text{N}_\text{b} < \text{N}_\text{a}$
  • C
    $\text{N}_\text{b}=\text{N}_\text{a}$
  • D
    $\text{N}_\text{b}\leq\text{N}_\text{a}$
✓

Answer

Correct option: A.
$\text{N}_\text{b} > \text{N}_\text{a}$
Stability of molecules If $\ce{N_b}$ is the number of electrons occupying bonding orbitals and $\ce{N_a}$ the number of electrons occupying the antibonding orbitals, then
  1. The molecule is stable if $\ce{N_b}$ is greater than $\ce{N_a}$.
  2. The molecule is unstable if $\ce{N_b}$ is less than $\ce{N_a}$.

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