Coordination Compounds Questions

The IUPAC name for the complex $[\text{Co}({\text{NO}}_2)({\text{NH}}_3{)}_5]{\text{Cl}}_2$ is:

Nickel ($Z=28$) combines with a uninegative monodentate ligand ${\text{X}}^{-}$ to form a paramagnetic complex $[{\text{NiX}}_4{]}^{2-}$. The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively:

In ${\text{Fe(CO)}}_5$, the $\text{Fe}-\text{C}$ bond possesses:

The “spin-only” magnetic moment [in units of Bohr magneton, (${\mu }_B$)] of ${\text{Ni}}^{2+}$ in aqueous solution would be (Atomic number of $\text{Ni}=28$):

How many $\text{EDTA}$ (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a ${\text{Ca}}^{2+}$ ion?