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Any of six isomeric compounds that have the formula C8H11N, are derivatives of xylene, and resemble aniline: used in dye manufacture.

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Electrode Potentials

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

Copper

Discovered : known to ancient civilisations
Origin : The name is derived from 'Cuprum', the Latin name for Cyprus.

Percent by Mass

100% times the actual yield divided by theoretical yield.

Electronic Transition

The transfer of an electron from one energy level to another.

Band of Stability

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

Dipole

Refers to the separation of charge between two covalently bonded atoms.

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.

Weak Electrolyte

A substance that conducts electricity poorly in a dilute aqueous solution.

Molecular Orbital

An orbit resulting from overlap and mixing of atomic orbitals on different atoms. An MO belongs to the molecule as a whole.

Metallic Conduction

Conduction of electrical current through a metal or along a metallic surface.