The correct IUPAC name for [CrF_2(en)_2] ,Cl is - Vidyadip

MCQ

The correct $IUPAC$ name for $[CrF_2(en)_2] \,Cl$ is

A
chloro difluorido ethylene diaminechromium $(III)$ chloride
✓
difluoridobis (ethylene diamine) chromium $(III)$ chloride
C
difluorobis-(ethylene diamine) chromium $(III)$ chloride
D
chloro difluoridobis (ethylene diamine) chromium $(III)$ (Karnataka )

✓

Answer

Correct option: B.

difluoridobis (ethylene diamine) chromium $(III)$ chloride

b
In $TiF _{6}^{2-}$ titanium is in $+4$ state. In $\mathrm{Cu}_{2} \mathrm{Cl}_{2}$ the copper is in $+1$ state. Thus in both cases, transition from one d-orbital to other is not possible.

$\mathrm{Ti}-3 d^{2} 4 s^{2} \rightarrow \mathrm{Ti}^{4+}-3 d^{0} 4 s^{0}$

$\mathrm{Cu}-3 d^{10} 4 s^{1} \rightarrow \mathrm{Cu}^{+}-3 d^{10} 4 s^{0}$

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