TS EAMCET · Chemistry · Coordination Compounds

Among the given complexes that possess " $CO$ " ligand bridges are
$\underset{\text { I }}{\left[ Co _2( CO )_8\right]} \underset{\text { II }}{\left[ Fe _3( CO )_{12}\right]}\left[\underset{\text { III }}{\left[ Mn _2( CO )_{10}\right]}\right] \underset{\text { IV }}{\left[ Fe _2( CO )_9\right]}$

A $I, II & III$
B $II, III & IV$
C $I, II & IV$
D $I, III & IV$

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(C) $I, II & IV$

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Co2(CO)8 is known as dicobalt octacarbonyl. Here each Co atom is surrounded by 3 CO ligands termial and 2 CO ligand bridges. It has one metal-metal bond. Therefore its structure is: Fe3CO12 is triiron dodecacarbonyl. It has two CO ligand bridges as shown below. Mn2CO10 is…

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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Among the given complexes that possess " $CO$ " ligand bridges are
\(\underset{\text { I }}{\left[ Co _2( CO )_8\right]} \underset{\text { II }}{\left[ Fe _3( CO )_{12}\right]}\left[\underset{\text { III }}{\left[ Mn _2( CO )_{10}\right]}\right] \underset{\text { IV }}{\left[ Fe _2( CO )_9\right]}\)

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Among the given complexes that possess "CO" ligand bridges are\(\underset{\text { I }}{\left[ Co _2( CO )_8\right]} \underset{\text { II }}{\left[ Fe _3( CO )_{12}\right]}\left[\underset{\text { III }}{\left[ Mn _2( CO )_{10}\right]}\right] \underset{\text { IV }}{\left[ Fe _2( CO )_9\right]}\)

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