Chemistry
Grade-9
Easy
Question
Columns of the periodic table are called
- Periods
- Groups
- Fences
- Metals
Hint:
The vertical columns are called groups.
The correct answer is: Groups
- In Mendeleev's periodic table there are 118 elements arranged in 18 groups and 7 periods.
- The horizontal rows are called periods.
- The vertical columns are called groups.
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