The magnetic moment of metal ion of first transition series is `2.83 BM`. Therefore, it will have unpaied electrons

Options

A. 2
B. 4
C. 3
D. 6

Answer

A

Explanation

`mu = sqrt(n (n + 2)) (mu =` magnitic moment)
`(n =` no. of unparied electrons.).
`2.8 = sqrt(n (n + 2))`
`n (n + 2) = 8`
`n^(2) + 2n - 8 = 0`
`n = + 2`.