Q5 / 90 · JEE Main 2021 (01 Sep Shift 2) · Chemistry

Number of paramagnetic oxides among the following given oxides is $___________.$
${Li}_{2} O, CaO, {Na}_{2} O_{2}, {KO}_{2}, MgO$ and $K_{2} O$

Correct answer
A
$1$
B
$3$
C
$0$
D
$2$

Solution

Compound	Nature
$K_{2} O$	diamagnetic
${Li}_{2} O$	diamagnetic
$MgO$	diamagnetic
$CaO$	diamagnetic
${Na}_{2} O_{2}$	diamagnetic
${KO}_{2}$	paramagnetic

Hence, the correct answer is option: 'A'.

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