Among \(\mathrm{CrO},{\mathrm{Cr}}_{2}{\mathrm{O}}_{3}\) and \({\mathrm{CrO}}_{3}\), the sum of spin-only magnetic momen…
Among \(\mathrm{CrO},{\mathrm{Cr}}_{2}{\mathrm{O}}_{3}\) and \({\mathrm{CrO}}_{3}\), the sum of spin-only magnetic moment values of basic and amphoteric oxides is_____\(\times {10}^{-2}\mathrm{BM}\) (nearest integer).
(Given atomic number of \(\mathrm{Cr}\) is 24 )
[JEE Main 2024, 06 Apr (Shift 1)]
877
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
\(=4.90+3.87=8.77\)
\({\mu }_{\text{only }}=877\times {10}^{-2}\)
Ans. 877
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