Question

Match the complexes in column $-$ I with the EAN of central atom in column $-$ II.

Answer 1

EAN=Z-X+Y
EAN=Effective atomic number
Z=Atomic number of the metal
X = number of electrons lost during the formation of metal ions from its atom.
Y = number of electrons donated by ligands.
The effective atomic number of the complex ${\left[Fe{\left(CO\right)}_4\right]}^{2-}$ is $26+2+8=36$.
The effective atomic number of the complex $\left[Co{\left(N{H}_3\right)}_{5}Cl\right]C{l}_2$ is $27-3+10=36$.
The effective atomic number of the complex $K_2\left[Ni{\left(CN\right)}_4\right]$ is $28-2+8=34$.
The effective atomic number of the complex ${\left[Cu{\left(N{H}_3\right)}_4\right]}^{2+}$ is $29-2+8=35$.