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प्रश्न
The number of electrons in the valence shell of a halogen is ______.
विकल्प
1
3
5
7
MCQ
रिक्त स्थान भरें
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उत्तर
The number of electrons in the valence shell of a halogen is 7.
Explanation:
Halogens belong to group 17 and have seven electrons in their valence shell. They tend to gain one electron to complete that shell, so the other numbers are incorrect.
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