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What is the correct order of magnetic strength among the following elements?

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in Chemistry – Class 12 by (188k points)
What is the correct order of magnetic strength among the following elements?

(a) Fe > Co > Ni > Cu

(b) Fe > Ni > Co > Cu

(c) Cu > Ni > Co > Fe

(d) Cu > Fe > Ni > Co

I got this question during an interview.

The origin of the question is Solid State Magnetic Properties in chapter Solid State of Chemistry – Class 12

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Correct choice is (a) Fe > Co > Ni > Cu

The explanation: Magnetic strength depends on the number of unpaired electrons possessed by the element. Iron, Cobalt, Nickel and Copper have 4, 3, 2 and 1unpaired electron respectively. Hence, the correct order of magnetic strength is: Fe > Co > Ni > Cu.

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