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Any of a subgroup of rare-earth elements, of which the cerium and terbium metals comprise the other two subgroups.

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Electrode Potentials

Potentials, E, of half-reactions as reductions versus the standard hydrogen electrode.

Downs Cell

Electrolytic cell for the commercial electrolysis of molten sodium chloride. For further information see Electrochemistry or Fuel Cells.

Standard Electrodes

Half-cells in which the oxidized and reduced forms of a species are present at unit activity, 1.0M solutions of dissolved ions, 1.0atm partial pressure of gases, and pure solids and liquids.

Coulomb

Unit of electrical charge.

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.

Solvation

The process by which solvent molecules surround and interact with solute ions or molecules.

Canal Ray

Stream of positively charged particles (cations) that moves toward the negative electrode in cathode ray tubes, observed to pass through canals in the negative electrode.

Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.

Denatured

A commercial term used to describe ethanol that has been rendered unfit for human consumption because of the addition of harmful ingredients to make it sales tax-expempt.

 

Natural Radioactivity

Spontaneous decomposition of an atom.