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Iron carbonyl, `Fe(CO)_5` is

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Iron carbonyl, `Fe(CO)_5` is
A. (a) tetranuclear
B. (b) mononuclear
C. (c) trinuclear
D. (d) dinuclear
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Correct Answer - B
`Fe(CO)_5`
`EAN=(Z)-(O.N)+2(C.N.)Z=` Atomic no., O.N
=oxidation no. of central atom
`=26-0+2(5)` C.N.= Coordination no.
`=26+10=36`
only one central metal atom/ion is present and it follows EAN rule, so it is mononuclear.
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