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Dennis_Churaev [7]
3 years ago
10

Elements in the periodic table are arranged in columns or

Chemistry
2 answers:
elena-s [515]3 years ago
6 0
They are arranged by their atomic number which can be figured by counting how many protons or electrons they have.
lutik1710 [3]3 years ago
3 0
Maybe by protons i forgot how to spell it :(
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