Which complex compound is most stable? [2023]

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Solution

Q.
Which complex compound is most stable [2023]

1 $[{CoCl}_{2} {(en)}_{2}] {NO}_{3}$

2 ${[Co {({NH}_{3})}_{6}]}_{2} {({SO}_{4})}_{3}$

3 $[Co {({NH}_{3})}_{4} (H_{2} O) Br] {({NO}_{3})}_{2}$

4 $[Co {({NH}_{3})}_{3} {({NO}_{3})}_{3}]$

Ans.
(1)

Chelating ligands (e.g., en) form more stable complexes than unidentate ligands.

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