Among Co 3+, Ti 2+, V 2+ and Cr 2+ ions, one if used as a reagent cannot liberate H 2 from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is .......... B.M. (Nearest integer)

Question

Among Co 3+, Ti 2+, V 2+ and Cr 2+ ions, one if used as a reagent cannot liberate H 2 from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is .......... B.M. (Nearest integer) (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Co 3+ can't liberate H 2. It has d 6 configuration, Number of unpaired electrons =4 μ=√4 × 6=4.92 text B.M.

Q. Among $C o^{3 +}, T i^{2 +}, V^{2 +}$ and $C r^{2 +}$ ions, one if used as a reagent cannot liberate $H_{2}$ from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is .......... B.M. (Nearest integer)

$C o^{3 +}$ can't liberate $H_{2}$ .
It has $d^{6}$ configuration,
Number of unpaired electrons $= 4$
$μ = 4 \times 6 = 4.92 B.M.$

Q. Among Co3+,Ti2+,V2+ and Cr2+ ions, one if used as a reagent cannot liberate H2​ from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is .......... B.M. (Nearest integer)

Co3+ can't liberate H2​. It has d6 configuration, Number of unpaired electrons =4 μ=4×6​=4.92 B.M.

Q. Among $C o^{3 +}, T i^{2 +}, V^{2 +}$ and $C r^{2 +}$ ions, one if used as a reagent cannot liberate $H_{2}$ from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is .......... B.M. (Nearest integer)

$C o^{3 +}$ can't liberate $H_{2}$ .
It has $d^{6}$ configuration,
Number of unpaired electrons $= 4$
$μ = 4 \times 6 = 4.92 B.M.$