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In metals such as Mg, energy bands overlap and both 3s and 3p bands contain electrons.
Overlap of bands is responsible for the metallic properties of Mg. If the 3s and 3p bands did not overlap, then
the 3s band would be full, the 3p band empty and Mg would not be metallic. This is the situation that holds in
insulators and semiconductors.

From A.R. West, Solid State Chemistry and Its Applications, WILEY,2014
21Â¥2015-09-18 10:56:44
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19Â¥: Originally posted by guoquans at 2015-09-18 10:31:22
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20Â¥: Originally posted by willbuilder at 2015-09-18 10:55:57
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