Use Hund’s rule to derive the electronic configuration of ...

NCERT Class XII Chemistry
Chapter - The d- and f-Block Elements
Questions with Solutions

Question : 31 of 49

Marks: +1, -0

Use Hund’s rule to derive the electronic configuration of Ce‌3+ ion, and calculate its magnetic moment on the basis of ‘spin-only’ formula.

Solution:

The electronic configuration of Ce‌3+ is 4f ‌1
µ=√n(n+2)
=√1(1+2)
=√3
=1.732 BM

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