The metal carbonyl has a completely diamagnetic nature. Based on VBT, what is the hybridisation of i — Coordination Compounds Chemistry Question
Question
The metal carbonyl $[Fe(CO)_5]$ has a completely diamagnetic nature. Based on VBT, what is the hybridisation of iron in this complex?
Answer: B
💡 Solution & Explanation
Neutral Fe is $3d^6 4s^2$. The strong $CO$ ligands force the 4s electrons into the 3d subshell, causing complete pairing ($3d^8$). One 3d orbital becomes empty. Hybridisation is $dsp^3$, yielding a trigonal bipyramidal geometry.
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