p-Block elementsHard

Question

The paramagnetic species is :

Options

A.KO2
B.SiO2
C.TiO2
D.BaO2

Solution

Species having unpaired electron or odd number of electrons are paramagnetic whilespecies having paired or even number of electrons are called diamagnetic.
KO2 has 35 electrons - paramagnetic
SiO2 has 30 electrons - diamagnetic
TiO2 has 38 electrons - diamagnetic
BaO2 has 72 electrons - diamagnetic

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