Determine the value of `((x+y^(2)))/(2)` for `Cr^(3+)` ion
Where x = number of unpaired electron in `Cr^(3+)`
y = Manetic moment of `Cr^(3+)`

Answer

9

Explanation

Electronic configuration of `Cr^(3+)`
`implies[Ar]3d^(3)4s^(@)`
x = 3 unpaired electron
`y = sqrt(3(3+2))=sqrt(15)`
`(x+y^(2))/(2)" implies "(3+(sqrt(15))^(2))/(2)=9`