Consider the hydrated ions of .
The correct order of their spin-only magnetic moments is:
Spin-only magnetic moment is more for the elements whose number of unpaired electrons are higher.
Spin-only magnetic moment n (number of unpaired electrons)
= ( n = 0)
= ( n = 1)
= ( n = 2)
= ( n = 3 )
Correct order is :
So, option (2) is correct.
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