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prisoha [69]
2 years ago
7

How is the moderm periodic table arranged?

Chemistry
1 answer:
ankoles [38]2 years ago
8 0

Answer:

Explanation:

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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