science
Grade-9
Easy
Question
Which one of the following are having the same number of electrons in its valence shell?
- Oxygen and sulphur
- Neon and sodium ion
- Oxygen and neon
- All the above
Hint:
As oxygen and sulfur have 6 valence electrons, their number of electrons in the valence shell is the same.
The correct answer is: All the above
- Oxygen and sulfur have 6 valence electrons in the valence shell, so they are equal in the number of valence electrons.
- The number of valence electrons in neon is 8 and in sodium, it is one.
- So the number of valence electrons in sodium, neon, and oxygen are not the same.
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