Chemistry
Grade-9
Easy
Question
How many electrons do the Halogens all have in their outer shells?
- 5
- 6
- 7
- 8
Hint:
Halogens have one electron less than noble gas.
The correct answer is: 7
- Halogens are in the 17th group of periodic table.
- Their valence shell has one electron less than noble gas. Fulfilled valence shell has 8 electrons.
- Halogens have seven electrons in the outermost shell.
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