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Refers to species that have only six electrons in the highest energy level of the central element (many Lewis acids).

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Electromotive Series

The relative order of tendencies for elements and their simple ions to act as oxidizing or reducing agents, also called the activity series.

Thermal Cracking

Decomposition by heating a substance in the presence of a catalyst and in the absence of air.

 

Boron Hydrides

Binary compounds of boron and hydrogen.

Background Radiation

Ratiation extraneous to an experiment. Usually the low-level natural radiation form cosmic rays and trace radioactive substances present in our environment.

Atomic Weight

Weighted average of the masses of the constituent isotopes of an element, The relative masses of atoms of different elements.

Mixture

A sample of matter composed of two or more substances, each of which retains its identity and properties.

Ampere

Unit of electrical current, one ampere equals one coulomb per second.

 

Hund's Rule

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

Nuclear Fission

The process in which a heavy nucleus splits into nuclei of intermediate masses and one or more protons are emitted.

Faraday's Law of Electrolysis

One equivalent weight of a substance is produced at each electrode during the passage of 96,487 coulombs of charge through an electrolytic cell.