The Periodic Table

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Chemistry

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18 Terms

1
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Octet Rule
________- atoms with 8 outer electrons are stable.
2
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Oxidation numbers
________- apparent changes elements have when they react
3
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Law of Octaves
________- seven groups of 7
4
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Newlands (1863)
arranged by increasing atomic number
5
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Law of Octaves
seven groups of 7
6
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Mendelev (1865)
First periodic table
7
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Mosely (1913)
arranged by increasing atomic number
8
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Period/Series
horizontal rows
9
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Group/Family
vertical columns
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1A to 8A
Representative Elements
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Cr
Chromium
12
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Mo
Molybdenum
13
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W
Tungsten
14
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Cu
Copper
15
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Ag
Silver
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Au
Gold
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Octet Rule
atoms with 8 outer electrons are stable
18
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oxidation numbers
apparent changes elements have when they react