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  4. Which among the following is paramagnetic ?

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Q. Which among the following is paramagnetic ?

AIPMTAIPMT 1994The p-Block Elements - Part2

Solution:

A species with one or more unpaired electron is paramagnetic.
No. of valence electrons in $Cl_2O = 7 \times 2 + 6 $
= 20 (even)
No. of valence electrons in $ClO_2 = 7 + 6 \times 2$
= 19 (odd)
No. of valence electrons in $Cl_2O_7 = 7 \times 2 + 6 $
= 56 (even)
No. of valence electrons in $Cl_2O_6 = 7 \times 2 + 6 \times 6$
= 5 (even)
Thus, $ClO_2$ is expected to be paramagnetic