From magnetic moment formula:
μs=n(n+2)BM(n= no. of unpaired electrons )
Ion E.C. n
V3+:[Ar]3d24s02
Cr3+:[Ar]3d34s03
Fe2+:[Ar]3d64s04
Ni3+:[Ar]3d74s03
Thus, {\mathrm{Cr}}^{3+}&{\mathrm{Ni}}^{3+} have same value of μs
JEE Main 2023 — Chemistry Inorganic Chemistry
How many of the following metal ions have similar value of spin only magnetic moment in gaseous state? ________
(Given: Atomic number:V,23;Cr,24;Fe,26;Ni,28)
V3+,Cr3+,Fe2+,Ni3+
Held on 25 Jan 2023 · Verified 6 Jul 2026.
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