Coordination CompoundsmediumMCQ SINGLE

Correct sequence of CO bond order in given compounds is :<br>(P) Fe(CO)5<br>(Q) CO<br>(R) H3B <- CO<Coordination Compounds Chemistry Question

Question

Correct sequence of CO bond order in given compounds is :<br>(P) Fe(CO)5<br>(Q) CO<br>(R) H3B <- CO<br>(S) [Mn(CO)5]-

Answer: B

💡 Solution & Explanation

CO bond order $\propto$ 1 / Extent of back bonding (M $\rightarrow$ CO). Correct sequence of CO bond order : H3B $\leftarrow$ CO > CO > Fe(CO)5 > [Mn(CO)5]-

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