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kakasveta [241]
3 years ago
9

How do modern periodic table arranged

Chemistry
1 answer:
pychu [463]3 years ago
4 0
In the modern periodic table, the elements are arranged according to their atomic number - not their relative atomic mass.



In the periodic table the elements are arranged into:

rows, called periods, in order of increasing atomic number
vertical columns, called groups, where the elements have similar properties

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