Multiple choice

The number of absorption band observed in [Co(H2O)6]2+ and [CoF6]3- respectively are ________.

  1. 1 and 3

  2. 0 and 1

  3. 0 and 3

  4. 3 and 1

  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This option is correct because [Co(H2O)6]2+ complexes ion in Co2+ are related to 3d7 electronic configuration and have F4 ground state term. It splits in to 4T1g(F),4T2g(F), 4A2g(F) and 4T1g(P), respectively, i.e. show 3 bands but other complexes ion spin allowed transition in 5T2and 5Eg one absorption band.