Important Terms Related to Coordination Compounds

The coordination number of a central metal atom in the complex is determined by

A homoleptic chemical compound is a metal compound with all the ligands _____ .

$[{\mathrm{CoF}}_6{]}^{3-}$ has Cobalt in its oxidation state of $+3$. Cobalt is in an oxidation state of ${\mathrm{sp}}^3{\mathrm{d}}^2$. It is a high spin complex, and is _____ in terms of magnetic nature.

Oxidation number of $\mathrm{Fe}$ in ${\mathrm{K}}_3\left[\mathrm{Fe}\right(\mathrm{CN}{)}_6]$ is :

${\left[\mathrm{M}{\left({\mathrm{H}}_2\mathrm{O}\right)}_4\right]}^{+2}+4{\mathrm{CH}}_3{\mathrm{NH}}_2\stackrel{{\mathrm{K}}_1}{\to }\mathrm{A}; ∆{\mathrm{G}}_1^0$

${\left[\mathrm{M}{\left({\mathrm{H}}_2\mathrm{O}\right)}_4\right]}^{+2}+2{\mathrm{H}}_2{\mathrm{NCH}}_2{\mathrm{CH}}_2{\mathrm{NH}}_2\stackrel{{\mathrm{K}}_2}{\to }\mathrm{B}; ∆{\mathrm{G}}_2^0$

In the above reaction

(a) $∆{\mathrm{G}}_2^0$ is more negative than $∆{\mathrm{G}}_1^0$.

(b) Complex $\mathrm{A}$ is optically inactive.

(c) Entropy change is higher for the reaction of formation of complex $\mathrm{B}$.

(d) Formation constant ${\mathrm{K}}_2$ is greater than formation constant ${\mathrm{K}}_1$.

Choose the correct option.

Ammonia forms the complex ${\left[\mathrm{Cu}{\left({\mathrm{NH}}_3\right)}_4\right]}^{2+}$ with copper ions in alkaline solutions, but not in acidic solutions. Why?

Which of the following complexes is the most stable?

$[{\mathrm{CoF}}_6{]}^{3-}$ has Cobalt in its oxidation state of $+3$. Cobalt ion is ${\mathrm{sp}}^3{\mathrm{d}}^2$ hybridised. It is _____ in terms of magnetic nature.

The ligand diethylenetriamine is _______.

Ligand is an atom, an ion or molecule which is capable of accepting a pair of electrons from the central metal atom.

Thiocyanate ion (${\mathrm{NCS}}^{-}$) is an _____ ligand. It can bind to central atom by more than one atom.

Bidentate ligands are Lewis acids that accept two pairs of electrons to a metal atom.

A coordination entity constitutes a central metal atom or ion bonded to a fixed number of ions or molecules.

The oxidation state and coordination number of the central metal ion in ${\mathrm{K}}_4\left[\mathrm{Fe}\right(\mathrm{CN}{)}_6 ]$

The oxidation state and coordination number of the central metal ion in $\left[\mathrm{Co}\right(\mathrm{en}{)}_3 {]}^{3+}$

A bidentate ligand is:

In a coordination entity, the atom/ion to which a fixed number of ions/groups are bound in a definite geometrical arrangement around it, is called the central metal atom/ion.

A coordination entity constitutes a central metal atom or ion bonded to a fixed number of ions or molecules.

The coordination number of a metal ion in a complex can be defined as the number of ligand donor atoms to which the metal is directly bonded.