Question

Magnetic moment of `V(Z = 23),Cr(Z = 24),and Mn(Z= 25)` are ` x,y,z `repectively hence
A. `x = y = z`
B. `x lt y lt z`
C. `x lt z lt y`
D. `z lt y lt x`

Answer 1

Correct Answer - C
`V = (Z = 23) rArr 3d^(3) 4s^(2) (n = 3)` (`n` is the number of unpaired electrons) `(x)`.
`Cr(Z=24) rArr 3d^(5) 4s^(1) (n = 6) (y)`
`Mn(Z = 25) rArr 3d^(5) 4s^(2) (n=5) (z)`
The more the number of unpaired electrons, the higher is the magnetic moment. So the answer is `x lt z lt y`.