Chem (7).txt

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Author:
xiongav
ID:
102721
Filename:
Chem (7).txt
Updated:
2011-09-19 01:10:01
Tags:
chem
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Description:
mass formula.element grouping and classification
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  1. Columns on the periodic table.
    • 1) alkali metals
    • 2) alkaline earth metals
    • 7) halogens (in compounds, haylides)
    • 8) noble gases (unreactive)
  2. What are the main group elements?
    First two columns and the last six columns
  3. What are the transition elements?
    Everything between the main group elements
  4. What is the mass formula?
    A (mass #) = # of protons + # of neutrons

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