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4.Chemical Bonding and Molecular Structure
hard
The number of antibonding electron pairs in $O_2^{2 - }$ molecular ion on the basis of molecular orbital theory is
A
$4$
B
$3$
C
$2$
D
$5$
Solution
(a) $O_2^{2 – }$ consist of four antibonding electron pair
$1s$ and $2s$ have two antibonding and $2{p_x}2{p_y}$ have two antibonding electron pair.
Standard 11
Chemistry
Similar Questions
Match each of the diatomic molecules in Column $I$ with its property / properties in Column $II$.
Column $I$ | Column $II$ |
$(A)$ $\mathrm{B}_2$ | $(p)$ Paramagnetic |
$(B)$ $\mathrm{N}_2$ | $(q)$ Undergoes oxidation |
$(C)$ $\mathrm{O}_2^{-}$ | $(r)$ Undergoes reduction |
$(D)$ $\mathrm{O}_2$ | $(s)$ Bond order $\geq 2$ |
$(t)$ Mixing of ' $\mathrm{s}$ ' and ' $\mathrm{p}$ ' orbitals |