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Equilibrium constant that applies to the dissolution of a slightly soluble compound.

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Extensive Property

A property that depends upon the amount of material in a sample.

Dubnium

Discovered : at both Berkeley, California, USA, and Dubna, near Moscow, Russia in 1970. Description:A highly radioactive metal which does not occur naturally, and of which only a few atoms have ever been made. It is of research interest only. Origin:The element is named after the Russian town of Dubna.

Breeder Reactor

A nuclear reactor that produces more fissionable nuclear fuel than it consumes.

Radioactive Dating

Method of dating ancient objects by determining the ratio of amounts of mother and daughter nuclides present in an object and relating the ratio to the object?s age via half-life calculations.

Excited State

Any state other than the ground state of an atom or molecule.

Secondary Standard

A solution that has been titrated against a primary standard. A standard solution is a secondary standard.

 

Solvolysis

The reaction of a substance with the solvent in which it is dissolved.

Supercritical Fluid

A substance at temperature above its critical temperature.

Nonbonding Orbital

A molecular orbital derived only from an atomic orbital of one atom, lends neither stability nor instability to a molecule or ion when populated with electrons.

Bonding Orbital

A molecular orbit lower in energy than any of the atomic orbitals from which it is derived, lends stability to a molecule or ion when populated with electron.