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The substance that oxidizes another substance and is reduced.

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Essential Oil

A plant extract that has a distinctive odour or flavour.

Coke

An impure form of carbon obtained by destructive distillation of coal or petroleum.

Homonuclear

Consisting of only one element.

Spectator Ions

Ions in a solution that do not participate in a chemical reaction.

Molecular Geometry

The arrangement of atoms (not lone pairs of electrons) around a central atom of a molecule or polyatomic ion.

Emission Spectrum

Spectrum associated with emission of electromagnetic radiation by atoms (or other species) resulting from electronic transitions from higher to lower energy states.

 

Periodic Law

The properties of the elements are periodic functions of their atomic numbers.

Frasch Process

Method by which elemental sulfur is mined or extracted. Sulfur is melted with superheated water (at 170°C under high pressure) and forced to the surface of the earth as a slurry.

 

D -Transition elements (metals)

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

Crystal Field Theory

Theory of bonding in transition metal complexes in which ligands and metal ions are treated as point charges, a purely ionic model, ligand point charges represent the crystal (electrical) field perturbing the metal?s d orbitals containing nonbonding electrons.