The New Encyclopaedia Britannica
Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries - 934 pages
 Propaedia: outline of knowledge and guide to the Britannica.--- Micropaedia: ready reference and index.--- Macropaedia: knowledge in depth.
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A closely related property is electronegativity, the tendency of atoms to retain
their electrons and to attract additional electrons. The degree of electronegativity
of an element is shown by ionization potential, electron affinity, oxidation-
The periodicity of properties of the elements is caused by the periodicity in
electronic structure. The noble gases are chemically unreactive, or nearly so,
because their electronic structures are stable — their atoms hold their quota of
In an atom, for example, the electrons have certain allowed (discrete) energies
and are said to be bound. In a collision a bound electron may be raised from a
low to a high energy state, or excited. This, however, can occur only by the ...
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review