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The high electrical and thermal conductivities of the simple metals (i.e., the non-
transition metals of the periodic table) are best explained by reference to the free-
electron theory. According to this concept, the individual atoms in such metals ...
metallic fibre 58 the binding force between metal ions, account for the malleability
and ductility of most metals. When a metal is shaped or drawn, it does not fracture
, because the ions in the planes of its crystal structure are quite easily ...
Metalloids have electronic structures intermediate between the nearly empty
outer electron shells of the typical metals and the nearly filled electron shells of
the nonmetals. Thus, they have enough empty electron or- bitals (pathways
within the ...
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The New Encyclopaedia Britannica (Encyclopaedia)User Review - Not Available - Book Verdict
For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review