Chemistry
Grade-9
Easy
Question
How many groups are there in the modern periodic table?
- 8
- 9
- 18
- 17
Hint:
There are 18 groups.
The correct answer is: 18
- Modern day periodic was discovered by Mendeleev.
- In the periodic table there are 118 elements.
- The vertical columns in the periodic table are called groups,18 in number.
- The horizontal rows in the periodic table are called periods, 7 in number.
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