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16-10-2018
Chemistry

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Difference between a row (“period”) & a column (“group”) on the periodic table and examples.

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16-10-2018

The rows are the one line of elements that goes from left to right horizontally. A column is a line of elements that goes vertically.

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16-10-2018

groups are number of valance electrons and periods are number of electron shells. the gtoups 13-18 have 3-8 valance electrons and groups 1 and 2 have 1 and 2 valance electrons

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