MHT CET · Chemistry · Coordination Compounds

What is total number of donor atoms in \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)\left(\mathrm{NH}_3\right)_5\right] \mathrm{I}_3\) ?

A \(5\)
B \(9\)
C \(6\)
D \(3\)

Verified Solution

Answer & Solution

Correct Answer

(C) \(6\)

Step-by-step Solution

Detailed explanation

In \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)\left(\mathrm{NH}_3\right)_5\right] \mathrm{I}_3\), five ammonia molecules and one water molecule, that is, total six ligands are attached to cobalt ion. All these ligands are monodentate since each has only one donor atom. Therefore, there are six donor atoms in the complex.

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

Explore more questions on app

From MHT CET

Match the column-I with column-II.

	Column-I (Type of kidney stones)		Column-II (Cause)
A	Calcium stones	I	Genetic disorder
B	Struvite stones	II	Calcium oxalates
C	Uric acid stones	III	Formed in response to infection by urea splitting bacteria
D	Cystine stones	IV	High protein diet

Select the correct option -

MHT CET 2023 Hard

Explore more questions on app