Q. 285.0( 1 Vote )

Which of the foll A. Ti3+

B. Mn2+

C. Fe2+

D. Co3+

Answer :

Mn2+ (3d5) and Fe2+(3d6) have more number of unpaired electrons 5 and 4 than Ti3+(3d1) and Co3+(3d7) which have only 1 and 3 unpaired electrons.

Magnetic moment =

Where n is the number of unpaired electrons.

Magnetic moment for all elements:

Mn2+ = =5.91

Fe2+= =2.89



Greater the value of n, greater the magnetic moment.

So, Mn2+ has the highest magnetic moment

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