Which one of the following transition metal ions shows magnetic moment of 5.92 BM

Options

A. `Mn^(2+)`
B. `Ti^(3+)`
C. `Cr^(3+)`
D. `Cu^(2+)`

Answer

A

Explanation

Magnetic moment `=sqrt(n(n+2))=5.92` i.e., n = 5
`"Number of unpaired electrons in "Mn^(2+)=5`
`"Number of unpaired electrons in "Ti^(3+)=1`
`"Number of unpaired electrons in "Cr^(3+)=3`
`"Number of unpaired electrons in "Cu^(2)=1`
`"Number of unpaired electrons in "Co^(2)=3`
`"Thus "Mn^(2+) " have magnetic moment"=5.92BM`