Teaching NVS PGT 2024 Test Series General Science Chemistry Periodic Table

If Hund's rule is not followed, magnetic moments of Fe2+, Mn+ and Cr, all having 24 electrons will be in order

1
Fe2+ < Mn+ < Cr
2
Fe2+ = Cr < Mn+
3
Fe2+ = Mn+ < Cr
4
All have Same magnetic moment
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