Match list I with list II and select the correct answer using the codes given below the lists
`{:("List I", "List II"), ("Metal Ions", "Magnetic moment (B,M)"),(A.Cr^(3+), 1. sqrt35),(B.Fe ^(2+), 2.sqrt30),(C. Ni^(2+), 3. sqrt24), (D. Mn^(2+), 4. sqrt15),(, 5.sqrt8):}`

Options

A. `A-1, B-3, C-5 D-4`
B. `A-2, B-3, C-5, D-1`
C. `A-4, B-3, C-5, D-1`
D. `A-4, B-5, C-3, D-1`

Answer

C

Explanation

Magnetic moment, `musqrt(n(n+2))`
Where n = number of unpaired electrons
For `Cr^(3+)(3s^(2)3p^(6)3d^(3)),mu=sqrt(3(3+2))=sqrt15 B.M. `
For `Fe ^(2+)(3s^(2)3p^(6)3d^(6)), mu= sqrt(4(4+2))= sqrt24 B.M.`
For `Ni^(2+)(2s^(2)3p^(6)3d^(8)), mu =sqrt(2(2+2))=sqrt8 B.M.`
`Mn^(2+)(3x^(2)3p ^(6) 3d^(5), mu =sqrt(5(5+2)))= sqrt35B.M`