\(\left[ Fe ( CN )_6\right]^{3-}\) આંતરકક્ષકીય સંકીર્ણ છે. આ સંકીર્ણ યુગ્મન ઊર્જાને અવગણતા માટે સ્ફટિક ક્ષેત્ર સ્થિરીકરણ ઉર્જાનું મૂલ્ય ઋણ \((-)\,......\Delta_0\) થશે.

A \(5\)
B \(4\)
C \(3\)
D \(2\)

Verified Solution

Answer & Solution

Correct Answer

(D) \(2\)

Step-by-step Solution

Detailed explanation

\(\left[ Fe ( CN )_{6}\right]^{3-}\) \(CN ^{-}\)is strong field ligand \(Fe ^{+3}\; 3 d ^{5}\;(t_{2 g}^{5} e_{g}^{0})\) \(\text { CFSE }=5\left(-0.4 \Delta_{0}\right)=-2.0 \Delta_{0}\)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

સૂચી \(- I\) સાથે સૂચી \(- II\) ને જોડો :

સૂચી \(- I\) તત્વોની ઈલેક્ટ્રોન સંરચના	સૂચી \(- II\) \(\Delta_{ i }\) in \(kJ\, mol-1\) માં
\((a)\) \(1 s ^{2} 2 s ^{2}\)	\((i)\) \(801\)
\((b)\) \(1 s ^{2} 2 s ^{2} 2 p ^{4}\)	\((ii)\) \(899\)
\((c)\) \(1 s^{2} 2 s^{2} 2 p^{3}\)	\((iii)\) \(1314\)
\((d)\) \(1 s ^{2} 2 s ^{2} 2 p ^{1}\)	\((iv)\) \(1402\)

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