Question
Consider the following low-spin complexes$
\begin{array}{l}
K_3\left[Co\left(NO_2\right)_6\right], K 4\left[Fe(CN)_6\right], K_3\left[Fe(CN)_6\right] \\
Cu_2\left[Fe(CN)_6\right] \text { and } Zn 2\left[Fe(CN)_6\right] .
\end{array}
$
The sum of the spin-only magnetic moment values of complexes having yellow colour is _________
B.M. (answer is nearest integer)

Answer

$0$

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