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Question
The number of groups in the modern periodic table is:
The number of groups in the modern periodic table is:
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Solution
The correct option is D 18
Elements in the modern periodic table were placed in the order of increasing atomic number. There are 18 groups and 7 periods in the periodic table.
The number of groups in the modern periodic table is 18.
Elements in the modern periodic table were placed in the order of increasing atomic number. There are 18 groups and 7 periods in the periodic table.
The number of groups in the modern periodic table is 18.
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