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An ionization reaction between identical molecules.

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Atomic Mass Unit (amu)

One twelfth of a mass of an atom of the carbon-12 isotope, a unit used for stating atomic and formula weights, also called dalton.

Isoelectric

Having the same electronic configurations.

Low Spin Complex

Crystal field designation for an inner orbital complex, contains electrons paired t2g orbitals before eg orbitals are occupied in octahedral complexes.

Frequency

The number of repeating corresponding points on a wave that pass a given observation point per unit time.

First Law of Thermodynamics

The total amount of energy in the universe is constant (also known as the Law of Conservation of Energy) energy is neither created nor destroyed in ordinary chemical reactions and physical changes.

Oxidation-reduction Reactions

Reactions in which oxidation and reduction occur, also called redox reactions.

Isotopes

Two or more forms of atoms of the same element with different masses, atoms containing the same number of protons but different numbers of neutrons.

Law of Conservation of Matter and Energy

The total amount of matter and energy available in the universe is fixed.

Homologous Series

A series of compounds in which each member differs from the next by a specific number and kind of atoms.

Supercritical Fluid

A substance at temperature above its critical temperature.