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B Group elements except IIB in the periodic table, sometimes called simply transition elements EX. Fe, Ni, Cu, Ti .
For further information see Metals.

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Pairing

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

Donor Atom

A ligand atom whose electrons are shared with a Lewis acid.

Gel

Colloidal suspension of a solid dispersed in a liquid, a semirigid solid.

Functional Group

A group of atoms that represents a potential reaction site in an organic compound.

Electrolyte

A substance whose aqueous solutions conduct electricity.

 

Ketone

Compound in which a carbonyl group is bound to two alkyl or two aryl groups, or to one alkyl and one aryl group.

Saccharide

An organic compound containing a sugar or sugars.

Oxidation-reduction Reactions

Reactions in which oxidation and reduction occur, also called redox reactions.

Critical Temperature

The temperature above which a gas cannot be liquefied, the temperature above which a substance cannot exhibit distinct gas and liquid phases.

Dilution

Process of reducing the concentration of a solute in solution, usually simply by mixing with more solvent.