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BITSAT 2021
Exam
BITSAT
Year
2021
Subject
Chemistry
Chapter
Coordination Compounds

BITSAT 2021 · Chemistry · Coordination Compounds

[Fe(en)_ 2 (H_ 2 O)_ 2 ]^ 2+ + en → complex (X). The correct...

\left[\mathrm{Fe}(\mathrm{en})_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\right]^{2+}+en→complexen → complex(\mathrm{X}). The correct statement about the complex (X) is -

Options

  1. Ait is a low spin complex
  2. Bit is diamagnetic
  3. Cit shows geometrical isomerism
  4. D(a) and (b) both

Correct answer

D. (a) and (b) both

Step-by-step solution

Complex X\mathrm{X} is \left[\mathrm{Fe}(\mathrm{en})_{3} \mathrm{\right\}]^{2+} ;as′en′isastrongfieldligandpairingofelectronswilltakeplace.[Fe(en)3]2+as 'en' is a strong field ligand pairing of electrons will take place. \left[\mathrm{Fe}(\mathrm{en})_{3}\right]^{2+} : d2sp3d^{2} s p^{3} hybridisation Hence, hybridisation is d2sp3d^{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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