Question
  1. For the complex $\ce{[Fe(CO)_5]},$ write the hybridization, magnetic character and spin of the complex. $($At. number : $Fe = 26)$
  2. Define crystal field splitting energy.

Answer

  1. $dsp^3,$ Diamagnetic, low spin.
  2. The energy used to split degenerate $d-$orbitals due to the presence of ligands in a definite geometry is called crystal field splitting energy.

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