Q25 / 90 · JEE Main 2024 (09 Apr Shift 1) · Chemistry

The total number of species from the following in which one unpaired electron is present, is _______ \(\mathrm{N}_2, \mathrm{O}_2, \mathrm{C}_2^{-}, \mathrm{O}_2^{-}, \mathrm{O}_2^{2-}, \mathrm{H}_2^{+}, \mathrm{CN}^{-}, \mathrm{He}_2^{+}\)

Correct answer: 4

Solution

One unpaired $\mathrm{e}^{-}$is present in : $\mathrm{C}_2^{-} ; \mathrm{O}_2^{-} ; \mathrm{H}_2^{+} ; \mathrm{He}_2^{+}$

Hence, the correct answer is 4.

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