Identify the ligands and give the coordination number and...

Identify the ligands and give the coordination number and the oxidation number for the central atom or ion in each of the following: (a) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{2}\left(\mathrm{NO}_{2}\right)_{4}\right]^{-}$, (b) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}\right] \mathrm{Cl}_{2}$ (c) $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$, (d) $\left[\mathrm{Pd}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$.

Identify the ligands and give the coordination number and the oxidation number for the central atom or ion in each of the following: (a) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{2}\left(\mathrm{NO}_{2}\right)_{4}\right]^{-}$,
(b) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}\right] \mathrm{Cl}_{2}$
(c) $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$,
(d) $\left[\mathrm{Pd}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$.

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Coordination Compounds

Coordination compounds consist of a central metal atom or ion bonded to one or more ligands via coordinate covalent bonds. These compounds exhibit unique geometric arrangements and properties determined by the metal center and its surrounding ligands.

Ligands

Ligands are molecules or ions that donate a pair of electrons to the central metal atom in a coordination compound, forming coordinate bonds. They can be monodentate, binding through a single donor atom, or polydentate, coordinating through multiple donor sites, which can affect the complex's stability and geometry.

Coordination Number

The coordination number is defined as the number of ligand donor atoms that are attached directly to the central metal atom. This number influences the shape and spatial arrangement of the complex, leading to common geometries such as tetrahedral, square planar, or octahedral in transition metal complexes.

Oxidation Number

The oxidation number of a central metal atom in a coordination compound is determined by assigning charges to all the ligands and balancing them with the overall charge of the complex. This formal charge provides insight into the metal’s electron count and plays a crucial role in the compound's chemical reactivity and electronic structure.

Transcript

Please give Ace some feedback