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Coordination Compounds

AIPMT 2000MCQEasy📈 Topic in 25% papers+4−1
Ques. 1AIPMT 2000

Shape of Fe(CO)5 is

  1. octahedral
  2. square planar
  3. trigonal bipyramidal
  4. square pyramidal

Answer

(3) trigonal bipyramidal

Solution

In Fe(CO)5, Fe is in the zero oxidation state and is bonded to five CO ligands.

Coordination number = 5, hybridisation dsp3

As per NCERT, iron pentacarbonyl is trigonal bipyramidal.

Answer: (3)

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Ques. 2AIPMT 2000

Which complex compound will give four isomers?

  1. [Fe(en)3]Cl3
  2. [Co(en)(NH3)2Cl2]Cl
  3. [Fe(PPh3)3NH3ClBr]Cl
  4. [Co(PPh3)3Cl]Cl3

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