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D and F Block Elements question

2022 · 25 Jul · Shift 1 · Q17
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D and F Block Elements question

2022 · 25 Jul · Shift 1 · Q17

JEE MainChemistryD and F Block ElementsNumerical+4 / −1
Among Co3+Co^{3+}Co3+, Ti2+Ti^{2+}Ti2+, V2+V^{2+}V2+ and Cr2+Cr^{2+}Cr2+ ions, one if used as a reagent cannot liberate H2H_2H2​ from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is ‾\underline{\hspace{2cm}}​ B.M. (Nearest integer)
Numerical answer
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