Chemistry
Grade-10
Easy
Question
Number of valence electron present in chlorine:
- 5
- 7
- 3
- 4
Hint:
Chlorine has 7 valence electrons in its outermost shells.
The correct answer is: 7
Valence electrons are defined as electrons in the outermost shells that are not filled. An atom of a group 17 element such as chlorine has 7 Valence Electrons.
The electronic configuration of chlorine is
(Cl) = 1s22s22p63s23p5, therefore chlorine has 7 valence electrons in its outermost shells.
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