Among CrO,Cr_2O_3,and CrO_3,the sum of spin-o | vedclass

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(A) $CrO$ is a basic oxide.$Cr_2O_3$ is an amphoteric oxide.In $CrO$,$Cr$ is in the $+2$ oxidation state $([Ar] 3d^4)$,so it has $4$ unpaired electron

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$877$

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(A) $CrO$ is a basic oxide.$Cr_2O_3$ is an amphoteric oxide.In $CrO$,$Cr$ is in the $+2$ oxidation state $([Ar] 3d^4)$,so it has $4$ unpaired electrons. The spin-only magnetic moment $\mu = \sqrt{n(n+2)} = \sqrt{4(4+2)} = \sqrt{24} \approx 4.90 \ BM$.In $Cr_2O_3$,$Cr$ is in the $+3$ oxidation state $([Ar] 3d^3)$,so it has $3$ unpaired electrons. The spin-only magnetic moment $\mu = \sqrt{3(3+2)} = \sqrt{15} \approx 3.87 \ BM$.The sum of the spin-only magnetic moments is $4.90 + 3.87 = 8.77 \ BM$.Expressed as $10^{-2} \ BM$,this is $877 	imes 10^{-2} \ BM$.

Among $CrO$,$Cr_2O_3$,and $CrO_3$,the sum of spin-only magnetic moment values of basic and amphoteric oxides is . . . . . . . . $10^{-2} \ BM$ (nearest integer).
(Given atomic number of $Cr$ is $24$)

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Among $CrO$,$Cr_2O_3$,and $CrO_3$,the sum of spin-only magnetic moment values of basic and amphoteric oxides is . . . . . . . . $10^{-2} \ BM$ (nearest integer).(Given atomic number of $Cr$ is $24$)