Chemistry
Grade-9
Easy
Question
Choose the correct statement.
- The vertical column in the periodic table is called a period.
- The vertical column in the periodic table is called a group.
- The horizontal row in the periodic table is not called a period.
- None of the above
Hint:
There are 18 groups in periodic table.
The correct answer is: The vertical column in the periodic table is called a group.
- Modern day periodic was discovered by Mendeleev.
- In the periodic table there are 118 elements arranged in 18 groups and 7 periods.
- The vertical columns in the periodic table are called groups.
- The horizontal rows in the periodic table are called periods.
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