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  • Among <img alt="\mathrm{Co}^{3+}, \mathrm{Ti}^{2+}, \mathrm{V}^{2+} \text{ and } \mathrm{Cr}^{2+}" src="/latex-image/?%5Cmathrm%7BCo%7D%5E%7B3&plus;%7D%2C%20%5Cmathrm%7BTi%7D%5E%7B2&plus;%7

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

Option: 1

5


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

Among given ions, \mathrm{CO^{3+}} cannot liberate \mathrm{H_{2}}

\mathrm{n=4 (unpaired \; e^{\ominus })}

So, spin only magnetic moment \mathrm{=\sqrt{n(n+2)}\; BM}

                                                \mathrm{\mu =\sqrt{4 \times 6}=4.92\; BM}

Answer = 5

Posted by

rishi.raj

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