Of the elements Sr, Zr, Mo, Cd and Sb, all of which are in period V, the paramagnetics are:

JEE Main Chemistry question

Of the elements , , , and , all of which are in period V, the paramagnetics are:

(A)Sr, Cd and Sb
(B)Zr, Mo and Cd
(C)Sr, Zr and Cd
(D)Zr, Mo and SbCorrect

Answer: (D)

Solution

Checking valence configurations: () and () have all paired electrons (diamagnetic); (, 2 unpaired electrons), (, 6 unpaired electrons) and (, 3 unpaired

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Question ID VK-141785