# The total number of unpaired electrons present in the complex

Question:

The total number of unpaired electrons present in the complex $\mathrm{K}_{3}\left[\mathrm{Cr}(\text { oxalate })_{3}\right]$ is __________________ .

Solution:

(3)

$\mathrm{K}_{3}\left[\mathrm{Cr}(\text { oxalate })_{3}\right]$Chromium is in $+3$ oxidation state. Number of unpaired electrons in $\mathrm{Cr}^{+3}$ will be 3 .