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A term used to describe molecules and polyatomic ions that have one atom in center and four atoms at the corners of a tetrahedron.

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Cation

A positive ion, an atom or group of atoms that has lost one or more electrons.

Gem-dimethyl group

Two methyl groups of the same carbon atom.

Dipole Moment

The product of the distance separating opposite charges of equal magnitude of the charge, a measure of the polarity of a bond or molecule, a measured dipole moment refers to the dipole moment of an entire molecule.

Lewis Acid

Any species that can accept a share in an electron pair.

Polar Bond

Covalent bond in which there is an unsymmetrical distribution of electron density.

Basic Anhydride

The oxide of a metal that reacts with water to form a base.

Group

A vertical column in the periodic table, also called a family.

Alkylbenzene

A compound containing an alkyl group bonded to a benzene ring.

Oxidizing Agent

The substance that oxidizes another substance and is reduced.

Overlap

The interaction of orbitals on different atoms in the same region of space.