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29-03-2018
Chemistry

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What is the number of valence electrons in each of the main groups on the periodic table?

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kenziemaselka kenziemaselka

29-03-2018

Column 1: Alkali has 1
Column 2: Alkaline has 2
Column 13: Boron group has 3
Column 14: Carbon group has 4
Column 15: Nitrogen group has 5
Column 16: Chalcogens has 6
Column 17: Halogens has 7
Column 18: Nobles gases has 8

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