JEE MAIN - Chemistry (2021 - 25th July Evening Shift - No. 7)
The spin only magnetic moments (in BM) for free Ti3+, V2+ and Sc3+ ions respectively are :
(At.No. Sc : 21, Ti : 22, V : 23)
(At.No. Sc : 21, Ti : 22, V : 23)
3.87, 1.73, 0
1.73, 3.87, 0
1.73, 0, 3.87
0, 3.87, 1.73
Explanation
$$\mu = \sqrt {n(n + 2)} BM$$
$$\matrix{ {T{i^{ + 3}} = [Ar]3{d^1}} & {n = 1} & {\mu = 1.73\,BM} \cr {{V^{ + 2}} = [Ar]3{d^3}} & {n = 3} & {\mu = 3.87\,BM} \cr {S{c^{ + 3}} = [Ar]3{d^0}4{s^0}} & {n = 0} & {\mu = 0} \cr } $$
$$\matrix{ {T{i^{ + 3}} = [Ar]3{d^1}} & {n = 1} & {\mu = 1.73\,BM} \cr {{V^{ + 2}} = [Ar]3{d^3}} & {n = 3} & {\mu = 3.87\,BM} \cr {S{c^{ + 3}} = [Ar]3{d^0}4{s^0}} & {n = 0} & {\mu = 0} \cr } $$
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