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Y2O3: A white, water-insoluble powder, Y2O3, used chiefly in incandescent gas and acetylene mantles.

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Cell Potential

Potential difference, Ecell, between oxidation and reduction half-cells under nonstandard conditions.

 

Outer Orbital Complex

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

Pairing

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

Fluids

Substances that flow freely, gases and liquids.

Hydrogenation

The reaction in which hydrogen adds across a double or triple bond.

Optical Activity

The rotation of plane polarized light by one of a pair of optical isomers.

 

Amphoterism

The ability to react with both acids and bases.Ability of substance to act as either an acid or a base.

Weak Field Ligand

A Ligand that exerts a weak crystal or ligand field and ge- nerally forms high spin complexes with metals.

Dextrorotatory

Refers to an optically active substance that rotates the plane of plane polarized light clockwise, also called dextro.

Potential Energy

Energy that matter possesses by virtue of its position, condition or composition.