1.

Which of the following complex will follow EAN rule ?

Answer»

`[MN(CO)_(5)]`
`[Mn(Co)_(6)]`
`[Fe(Co)_(5)]`
`[Co(Co)_(4)]`

Solution :`[NiBr_(2)(PE t_(3))_(2)]`
`Ni^(+2): sp^(3)` hybridised-tetrahedral structure, paramagnetic
`[Cu(NH_(3))_(4)]SO_(4),`
`Cu^(+)=dsp^(2)`- square PLANNER, paramagnetic


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