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Chapter 20: Problem 9

Define the following terms: coordination compound, ligand, donor atom, coordination number, chelating agent.

Short Answer

Expert verified
1. Coordination Compound: Compound with central metal atom/ion surrounded by ligands. 2. Ligand: Molecule/ion/atom bonding to the central atom in a coordination compound. 3. Donor Atom: Atom in a ligand that bonds directly to a central atom in a coordination compound. 4. Coordination Number: Number of points ligands are attached to the central atom. 5. Chelating Agent: Ligand that can form multiple bonds with a single metal ion.

Step by step solution

01

Define Coordination Compound

A coordination compound is a type of compound where a central metal atom or ion is surrounded by a number of neutral molecules or anions, known as ligands.
02

Define Ligand

A ligand is a molecule, ion, or atom that bonds to the central atom in a coordination compound. Ligands have at least one atom with a lone pair of electrons, which are used to form coordinate covalent bonds with the central atom.
03

Define Donor Atom

A donor atom refers to the atom in a ligand that is bonded directly to the central atom in a coordination compound. It's the atom that donates the electron pair to form the coordinate covalent bond.
04

Define Coordination Number

The coordination number of a coordination compound is the number of points at which ligands are attached to the central atom. It can be a useful tool for predicting the geometry of a coordination compound.
05

Define Chelating Agent

A chelating agent is a type of ligand that can form multiple bonds with a single metal ion. Chelating agents have multiple donor atoms, which allows them to 'grab onto' the metal ion, forming a chelate complex.

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