Which of the following molecules/ions does not contain unpai... | Chemistry | SolveeIt

Question

Which of the following molecules/ions does not contain unpaired electrons ?

$O^{2-}_2$

$B_2$

$N^+_2$

$O_2$

Answer

$O^{2-}_2$

Explanation

Solution

$O^{2-}_2$ (Total number of electrons = 18) $\sigma 1s^{2}, \sigma^{ * } 1s^{2}, \sigma 2s^{2}, \sigma^{ * } 2s^{2}, \sigma\, 2p^{2}_{z}, \pi \,2p^{2}_{x}$ $= \pi \,2p^{2}_{y} \,\pi^{ * } 2p^{2}_{x} = \pi^{ * } 2p^{2}_{y}$

Chemistry Question on Chemical bonding and molecular structure

Solution