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Question
Which of the following statements about the Modern periodic table is correct?
Options
18 horizontal rows are known as Periods.
7 vertical columns are known as Periods.
18 vertical columns are known as groups.
7 horizontal rows are known as groups.
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Solution
18 vertical columns are known as groups. and 7 horizontal rows are known as groups.
Explanation:
The Modern Periodic Table is systematically organised as follows:
- Groups: There are 18 vertical columns known as groups.
- Periods: There are 7 horizontal rows known as periods.
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