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  • Number of paramagnetic oxides among the following given oxides is ____________.<img alt="\mathrm{Li}_{2} \mathrm{O}, \mathrm{CaO}, \mathrm{Na}_{2} \mathrm{O}_{2}, \mathrm{KO}_{2}, \mathrm{MgO}$ and $\mathrm{K}_{2} \mathrm{O}" src="https://entrancecorner.c

Number of paramagnetic oxides among the following given oxides is ____________.\mathrm{Li}_{2} \mathrm{O}, \mathrm{CaO}, \mathrm{Na}_{2} \mathrm{O}_{2}, \mathrm{KO}_{2}, \mathrm{MgO}$ and $\mathrm{K}_{2} \mathrm{O}
Option: 1 1
Option: 2 3
Option: 3 0
Option: 4 2

Answers (1)

best_answer

Out of the given oxides, only \mathrm{KO_{2}} is paramagnetic . It contains \mathrm{O_{2}^{-}} ion which has 1 unpaired electron.

All other oxides are normal oxides\mathrm{(O^{2-})} or peroxide \mathrm{(O_2^{2-})} which are diamagnetic due to absence of unpaired electrons.

Hence, the correct answer is Option (1)

Posted by

sudhir.kumar

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