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Science
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In the periodic table, elements are organized by ___________ and _______________        

The periodic table is divided into metals and ____________

Elements combine with other elements to fill their outer _____________ shells.

May 6th, 2015
1. the atom number in terms of protons in the nuclues , electron configurations and recurring chemical properties.

2.non metals

3. energy shell

May 6th, 2015

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May 6th, 2015
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May 6th, 2015
Dec 11th, 2016
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