Write formula to calculate EAN with significance of terms involved in it. Calculate EAN of `[Fe(CN)_(6)]^(2-)`

The EAN of [Mn(Cl)_(6)]^(4-) is

The EAN of iron in [Fe(CN)_(6)]^(3-) is

The EAN of Ni in [Ni(CN)_(4)]^(2-) is

Write IUPAC name of Fe_4[Fe(CN)_6]

EAN of iron in K_(4)[Fe(CN)_(6)] is

Write oxidation state and coordination number of [Co(NH_(3))_(4)Cl_(2)]^(+) ion. Calculate EAN of iron in [Fe(CN)_(6)]^(4-) . Write the IUPAC name of [Zn(NH_(3))_(4)]^(2+)