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Isomers that result from the interchange of ions inside and outside the coordination sphere.

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Valence Electrons

Outermost electrons of atoms, usually those involved in bonding.

Free Energy Change

The indicator of spontaneity of a process at constnt T and P. If delta-G is negative, the process is spontaneous.

Homologous Series

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

Ionic Geometry

The arrangement of atoms (not lone pairs of electrons) about the central atom of a polyatomic ion.

Formula Unit

The smallest repeating unit of a substance. The molecule for nonionic substances

Electron Affinity

The amount of energy absorbed in the process in which an electron is added to a neutral isolated gaseous atom to form a gaseous ion with a 1- charge, has a negative value if energy is released.

Nitrogen Cycle

The complex series of reactions by which nitrogen is slowly but continually recycled in the atmosphere, lithosphere and hydrosphere.

 

Alkaline Earth Metals

Group IIA metals

Spectral Line

Any of a number of lines corresponding to definite wavelengths of an atomic emission or absorption spectrum, represents the energy difference between two energy levels.

 

Saturated Solution

Solution in which no more solute will dissolve.