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Regular periodic variations of properties of elements with atomic number (and position in the periodic table).

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Specific Rate Constant

An experimentally determined (proportionality) constant, which is different for different reactions and which changes only with temperature, k in the rate-law expression: Rate = k [A] x [B]v.

High Spin Complex

Crystal field designation for an outer orbital complex, all t2g and eg orbitals are singly occupied before any pairing occurs.

Compound

A substance of two or more elements in fixed proportions. Compounds can be decomposed into their constituent elements.

Electrodes

Surfaces upon which oxidation and reduction half-reactions, occur in electrochemical cells.

Cation

A positive ion, an atom or group of atoms that has lost one or more electrons.

Kinetic Energy

Energy that matter processes by virtue of its motion.

Physical Change

A change in which a substance changes from one physical state to another but no substances with different composition are formed. Example Gas to Liquid - Solid.

 

Cis-Trans Isomerism

A type of geometrical isomerism related to the angles between like ligands.

Spectral Line

Any of a number of lines corresponding to definite wavelengths of an atomic emission or absorption spectrum, represents the energy difference between two energy levels.

 

Calorie

The amount of heat required to raise the temperature of one gram of water from 14.5°C to 15.5°C. 1 calorie = 4.184 joules.