1.

Which one of the following pairs of complexes has the effective atomic number equal to 36 for the transition element ?

Answer»

`[CO(NH_(3))_(6)]Cl_(3):K_(3)[Fe(CN_(6))]`
`[Co(NH_(3))_(6)]Cl_(3):[Co(Co)_(4)]
`[Fe(CO)_(5)],K_(4)[Fe(CN)_(6)]`
`[Fe(CO)_(5)],K_(3)[Fe(CN)_(6)]`

Answer :C


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