AP EAMCET · Chemistry · Coordination Compounds

Which of the following types of isomerism is exhibited by
\[
\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{NO}_2\right)\right]\left(\mathrm{NO}_3\right)_2
\]
i. Optical ii. Linkage iii. Ionization
iv. Coordination

A ii, iii only
B i, ii, iii only
C i, iii only
D ii, iv only

Verified Solution

Answer & Solution

Correct Answer

(A) ii, iii only

Step-by-step Solution

Detailed explanation

No optical isomerism is exhibited by the given complex as there is a plane of symmetry. Linkage isomers :- \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{NO}_2\right)\right]^{2+}\) and \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5(\mathrm{ONO})\right]^{2+}\)…

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.

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Species	Conjugate acid
$(a) {NH}_{3}$	$(i) H_{2} {CO}_{3}$
$(b) {HCO}_{3}^{-}$	$(ii) H_{3} O^{+}$
$(c) H_{2} O$	$(iii) {NH}_{4}^{+}$
$(d) {HSO}_{4}^{-}$	$(iv) H_{2} {SO}_{4}$

Which of the following types of isomerism is exhibited by\[\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{NO}_2\right)\right]\left(\mathrm{NO}_3\right)_2\]i. Optical ii. Linkage iii. Ionizationiv. Coordination

Step-by-step Solution

Which of the following types of isomerism is exhibited by
\[
\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{NO}_2\right)\right]\left(\mathrm{NO}_3\right)_2
\]
i. Optical ii. Linkage iii. Ionization
iv. Coordination