Q.
Consider the following species
$\underset{(a)}{\left[ CoF _{6}\right]^{3-}}\underset{(b)}{\left[ Fe ( CN )_{6}\right]^{3-}}\underset{(c)}{\left[ Mn ( CN )_{6}\right]^{3-}}$
The correct order of their spin only magnetic moment is
Solution:
Higher the number of unpaired electrons on the central metal, higher is the spin only magnetic moment.
Species
Number of unpaired electron(s)
$\left[ CoF _{6}\right]^{3-}$
4
$\left[ Fe ( CN )_{6}\right]^{3-}$
1
$\left[ Mn ( CN )_{6}\right]^{3-}$
2
| Species | Number of unpaired electron(s) |
|---|---|
| $\left[ CoF _{6}\right]^{3-}$ | 4 |
| $\left[ Fe ( CN )_{6}\right]^{3-}$ | 1 |
| $\left[ Mn ( CN )_{6}\right]^{3-}$ | 2 |