\(0=2+2 x-6\)
\(x=2\)
In the complex \(K _2 Fe \left[ Fe ( CN )_6\right]\), both the iron atoms have \(+2\) oxidation state.
Since six cyanide ions surround the iron atom, its coordination number is 6 .
The \(Fe ^{2+}\) ion in \(\left[ Fe ( CN )_6\right]^{4-}\) has outer electronic configuration of \(3 d ^6\). The complex is a low spin complex.It contains o unpaired electrons with the magnetic moment of o \(B.M.\) and is colourless.
$\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right]^{2+}, \quad\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-} \text {, }$
$(A)$ $(B)$
$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+}, \quad\left[\mathrm{Cu}\left(\mathrm{H}_2 \mathrm{O}\right)_4\right]^{2+}$
$(C)$ $(D)$
અવશોષિત પ્રકાશ ની તરંગ સંખ્યા ના સંદર્ભ માં $A, B, C$ અને $D$ નો સાયો ક્રમ શોધો.