JEE Main 2024 Chemistry question
A first row transition metal in its +2 oxidation state has a spin-only magnetic moment value of 3.86 BM. The atomic number of the metal is
Answer: (D)
Solution
3.86 BM = √15 corresponds to 3 unpaired electrons; the M²⁺ ion is d³, so the metal is V (Z = 23).