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A dimensionless quantity whose magnitude is: equal to molar concentration in an ideal solution, equal to partial pressure in an ideal gas mixture, and defined as 1 for pure solids or liquids.

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Aryl Group

Group of atoms remaining after a hydrogen atom is removed from the aromatic system.

Outer Orbital Complex

Valence bond designation for a complex in which the metal ion utilizes d orbitals in the outermost (occupied) shell in hybridization.

Amide

Compound containing the O-C-N group.Compound that can be considered a derivative of ammonia in which one or more hydrogens are replaced by a alkyl or aryl groups.

 

Allotropic Modifications (Allotropes)

Different forms of the same element in the same physical state.

xenon tetrafluoride

A colorless, crystalline compound, XeF4, prepared by heating a gaseous mixture of fluorine and xenon.

Distillation

The separation of a liquid mixture into its components on the basis of differences in boiling points. The process in which components of a mixture are separated by boiling away the more volitile liquid.

Hydration

Reaction of a substance with water.

Mass Deficiency

The amount of matter that would be converted into energy if an atom were formed from constituent particles.

Band of Stability

Band containing nonradioactive nuclides in a plot of number of neutrons versus atomic number.

Formula

Combination of symbols that indicates the chemical composition of a substance.