Atoms, Molecules, And Ions Worksheet - Chapter 2 Page 24
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27Nomenclature of Binary
Compounds (molecular)
Formed Between Nonmetals.
• The less electronegative atom
(farthest to left) is usually listed
first.
• A Greek prefix is used to denote the
number of atoms of each element in
the compound (mono- is not used
on the first element listed, however.)
• The ending on the more
electronegative element is changed
to -ide.
– CCl
: carbon tetrachloride
4
– CO
: carbon dioxide
2
– CO: carbon monoxide
– N
O
: dinitrogen tetroxide
2
4
• In nonmetal compounds containing
carbon, the C atom is listed first in
the chemical formula, followed by H.
24
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