Chemistry - Coordination Chemistry Question with Solution | TestHub

$\left(i\right)$${\left[Co\left(en\right){\left(N{H}_3\right)}_3\left(H_{2}O\right)\right]}^{+3}$complex is type of$\left[M\left(AA\right)b_{3}c\right]$have two G.I.

$\left(B\right)$If (en) is replaced by two cyanide ligand, complex will be type of$\left[M{a}_3{b}_{2}c\right]$and have 3 G.I.

$\left(iii\right)$${\left[Co\left(en\right){\left(N{H}_3\right)}_3\left(H_{2}O\right)\right]}^{3+} have d^6 configuration \left(t_{62g}^6\right)$on central metal with SFL therefore it is dimagnetic in nature.
$\left(iv\right)$Complex${\left[Co\left(en\right){\left(N{H}_3\right)}_3\left(H_{2}O\right)\right]}^{3+}$have lesser$CFSE \left({∆}_O\right)$value than${\left[Co\left(en\right){\left(N{H}_3\right)}_4\right]}^{3+}$therefore complex${\left[Co\left(en\right){\left(N{H}_3\right)}_3\left(H_{2}O\right)\right]}^{+}$absorbs longer wavelength for d-d transition