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An algebraic increase in the oxidation number, may correspond to a loss of electrons.

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Artificial Transmutation

An artificially induced nuclear reaction caused by the bombardment of a nucleus with subatomic particiles or small nucei.

Corrosion

Oxidation of metals in the presence of air and moisture.

Copper

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

Homonuclear

Consisting of only one element.

Heteronuclear

Consisting of different elements.

Molecular Equation

Equation for a chemical reaction in which all formulas are written as if all substances existed as molecules, only complete formulas are used.

Mole Fraction

The number of moles of a component of a mixture divided by the total number of moles in the mixture.

 

Pairing

A favourable interaction of two electrons with opposite m , values in the same orbital.

Hund's Rule

All orbitals of a given sublevel must be occupied by single electrons before pairing begins.

Acid Anhydride

Compound produced by dehydration of a carbonic acid. General formula is R--C--O--C--R. Chemical compound that reacts with water to form an acid and are usually oxides of nonmetallic elements.