Question
Chemistry Question on p -Block Elements
Which among the following is paramagnetic?
A
Cl2O
B
ClO2
C
Cl2O7
D
Cl2O6
Answer
ClO2
Explanation
Solution
A species with one or more unpaired electronsis paramagnetic.
No. of valence electrons in Cl2O = 7 x 2 + 6 = 20 (even)
No. of valence electrons in ClO2 = 7 + 6 x 2 = 19 (odd)
No. of valence electrons in Cl2O7 = 7 x 2 + 6 x 7 = 56 (even)
No. of valence electrons in Cl2O6 = 7 x 2 + 6 x 6 = 50 (even)
Thus, ClO2 is expected to be paramagnetic.