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Additional
octet rule
English Wikipedia - The Free Encyclopedia
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Octet rule
The
octet rule
is a
chemical
rule of thumb
that reflects observation that
atoms
of
main-group elements
tend to combine in such a way that each atom has eight
electrons
in its
valence shell
, giving it the same
electronic configuration
as a
noble gas
. The rule is especially applicable to
carbon
,
nitrogen
,
oxygen
, and the
halogens
, but also to metals such as
sodium
or
magnesium
.
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