Tabla periodica

How the Periodic Table Works
by Craig Freudenrich, Ph.D.
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Please copy/paste the following text to properly cite this HowStuffWorks article:Freudenrich, Ph.D., Craig.  "How the Periodic Table Works"  28 January 2009.  HowStuffWorks.com.  28 February 2011.
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[pic]Inside this Article

1.Introduction to How the Periodic Table Works
2. Getting Organized: Origins of the Periodic Table
3. Building the Periodic Table Block by Block
4. The Columns Supporting the Periodic Table5. Trends in the Periodic Table
6. IUPAC: The Gatekeeper of Elements
7. See more »
7. Lots More Information
8. See all Chemical Elements articles
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The periodic table could represent one of our best attempts at trying to organize the world.
It's humannature to organize things. Cooks painstakingly organize their spices into various groupings, whether alphabetically or according to how often they're used. Kids dump out their piggy banks and sorttheir riches into piles of pennies, nickels, dimes and quarters. Even the items in a grocery store are grouped a certain way. Head down the international aisle, and you'll find packages of Chinese eggnoodles sitting next to boxes of taco shells.
Chemists, as it turns out, are organizational junkies, too. They look for similar physical and chemical properties among the elements, the basic formsof matter, and then try to fit them into similar groups.
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