JEE Main 2022 · 25 Jul · Shift 1 · Chemistry Q81

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ChemistryInteger+4 / -1Question 81 of 90

Among the following species

$\mathrm{N_2}$ , $\mathrm{N_2^+}$ , $\mathrm{N_2^-}$ , $\mathrm{N_2^{2-}}$ , $\mathrm{O_2}$ , $\mathrm{O_2^+}$ , $\mathrm{O_2^-}$ , $\mathrm{O_2^{2-}}$

the number of species showing diamagnesim is ______.

Your answer

Answer and worked solution

Official answer: 2

MO electron counts. $\mathrm{N_2}$ (14) and $\mathrm{O_2^{2-}}$ (18) have all electrons paired; the rest have unpaired electrons.

Answer: 2

Topics:Molecular orbital theory

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JEE Main 2022 · 25 Jul · Shift 1, Chemistry question 81