Question
[ Fe ( en )_ 2 ( H _ 2 O )_ 2 ]^ 2+ + en complex ( X ). The correct statement about the complex (X) is -
BITSAT
Chemistry
Coordination Compounds
2021
BITSAT 2021
BITSAT Chemistry Question (2021) — Solution
Options
- A. it is a low spin complex
- B. it is diamagnetic
- C. it shows geometrical isomerism
- D. (a) and (b) both
Answer
D. (a) and (b) both
Step-by-step solution
Complex X is [ Fe ( en )_ 3 right ]^ 2+ ; as 'en' is a strong field ligand pairing of electrons will take place. [ Fe ( en )_ 3 ]^ 2+ : d^ 2 s p^ 3 hybridisation Hence, hybridisation is d^ 2 s p^ 3 and complex is diamagnetic. As it has 3 bidentate symmetrical 'en' ligands so it will not show geometrical isomerism.
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