What is the ground-state electron configuration of chlorine and the number of valence electrons in it?
1 answer:
Explanation:
Chlorine is an element in group 7 on the periodic table.
It is the second element in this group of halogens
The element has a total of 17 electrons:
Ground state configuration = 1s² 2s² 2p⁶ 3s² 3p⁵
Valence electrons are the outermost shell electrons;
From the configuration: 3s² 3p⁵ is the valence shell
Number of electrons = 2 + 5 = 7
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