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QJEEM22Chbbf7: JEE Main 2022 Chemistry - Class 12 JEEM22Chbbf7 Solution: Among Co 3+ , Ti 2+ , V 2+ and Cr 2+ ions, one if used as a…

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)

Step-by-Step Verified Solution

Co3+ will not liberate H2 gas an reaction with dilute acid

ECo3+/Co2+O=+1.97

And Co3+ has electronic configuration =[Ar]3d6

∴4 unpaired e− are present in it

∴ Spin-only magnetic moment =4(4+2)=4.92≈5

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