nickkitcheyanov5bqb nickkitcheyanov5bqb

24-08-2017
Geography

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what are the columns and rows of the periodic talbe of the elements called

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theasianinny3 theasianinny3

24-08-2017

The horizontal rows in the periodic table are periods, while the vertical rows are called groups.

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kristiansgunnar kristiansgunnar

24-08-2017

the columns are called groups

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