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In the complexes [Fe(CN)6]3– and [Co(en)3]3+, the coordination number of iron and cobalt are respectively (en = ethylenediamine):
  • a)
    6 and 6
  • b)
    12 and 6
  • c)
    6 and 3
  • d)
    3 and 3
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
In the complexes [Fe(CN)6]3– and [Co(en)3]3+, the coordination n...
  • In 1st compound, CN is a unidentate ligand and hence it will surround the Fe atom from 6 different sides.
  • On the other hand, the 2nd compound contains bidentate ligand so each (en) will have two different sites of donating electrons and hence it required 3 (en) atoms for surrounding Co atom from 6 different sides.
    Hence A is correct.
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Most Upvoted Answer
In the complexes [Fe(CN)6]3– and [Co(en)3]3+, the coordination n...
  • In 1st compound, CN is a unidentate ligand and hence it will surround the Fe atom from 6 different sides.
  • On the other hand, the 2nd compound contains bidentate ligand so each (en) will have two different sites of donating electrons and hence it required 3 (en) atoms for surrounding Co atom from 6 different sides.
    Hence A is correct.
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Community Answer
In the complexes [Fe(CN)6]3– and [Co(en)3]3+, the coordination n...
En = ethylenediamine is bidentate ligand( denticity 2) thus coordination no of [Co(en)3]3+ is 2 ×3=6 (C.N= denticity× no of ligand)
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In the complexes [Fe(CN)6]3– and [Co(en)3]3+, the coordination number of iron and cobalt are respectively (en = ethylenediamine):a)6 and 6b)12 and 6c)6 and 3d)3 and 3Correct answer is option 'A'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about In the complexes [Fe(CN)6]3– and [Co(en)3]3+, the coordination number of iron and cobalt are respectively (en = ethylenediamine):a)6 and 6b)12 and 6c)6 and 3d)3 and 3Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the complexes [Fe(CN)6]3– and [Co(en)3]3+, the coordination number of iron and cobalt are respectively (en = ethylenediamine):a)6 and 6b)12 and 6c)6 and 3d)3 and 3Correct answer is option 'A'. Can you explain this answer?.
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