Chemistry - Complete d-block Question with Solution | TestHub

CrO Basic oxide ${\mathrm{Cr}}_2{\mathrm{O}}_3$ Amphoteric oxide In $\mathrm{CrO},\mathrm{Cr}$ exist as ${\mathrm{Cr}}^{+2}$ and have $\mu$ only $=4.90$ In ${\mathrm{Cr}}_2{\mathrm{O}}_3,\mathrm{Cr}$ exist as ${\mathrm{Cr}}^{+3}$ and have $\mu$ only $=3.87$ Sum of spin only magnetic moment $\begin{array}{rl}& =4.90+3.87=8.77\\ & {\mu }_{\text{only }}=877\times 10^{-2}\end{array}$
Ans. 877