Q.
Peroxides of alkali metals are
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a
Paramagnetic
b
Diamagnetic
c
Acidic in nature
d
Amphoteric in nature
answer is B.
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Detailed Solution
Diamagnetic All the alkali metals are paramagnetic because of the presence of one valence electron in the valence shell. The alkali metal cations i.e. Li+, Na+, K+, Rb+ and Cs+ all are diamagnetic because of absence of unpaired electrons. Therefore, their salts do not show paramagnetic property.
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