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Octet Rule
________- atoms with 8 outer electrons are stable.
Oxidation numbers
________- apparent changes elements have when they react
Law of Octaves
________- seven groups of 7
Newlands (1863)
arranged by increasing atomic number
Law of Octaves
seven groups of 7
Mendelev (1865)
First periodic table
Mosely (1913)
arranged by increasing atomic number
Period/Series
horizontal rows
Group/Family
vertical columns
1A to 8A
Representative Elements
Cr
Chromium
Mo
Molybdenum
W
Tungsten
Cu
Copper
Ag
Silver
Au
Gold
Octet Rule
atoms with 8 outer electrons are stable
oxidation numbers
apparent changes elements have when they react
Note 
Flashcard (50)