differentiate between groups and periods of modern periodic table.
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The atomic number of each element is written above the symbol. A period is a horizontal row of the periodic table. ... A group is a vertical column of the periodic table, based on the organization of the outer shell electrons. There are a total of 18 groups.
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Answer:
The atomic number of each element is written above the symbol. A period is a horizontal row of the periodic table. ... A group is a vertical column of the periodic table, based on the organization of the outer shell electrons. There are a total of 18 groups.
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