Chemistry
Grade-9
Easy
Question
Halogens are in the group number
- 18
- 17
- 19
- 16
Hint:
Halogens have one electron less than the noble gases.
The correct answer is: 17
- There are 118 elements in the periodic table arranged in 18 groups and 7 periods.
- Halogens have one electron less than the noble gases.
- Halogens are placed in group 17 in the periodic table.
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