How do you determine the electron configuration of Cl?
1 Answer
Jul 5, 2016
In most cases, you can tell the electron configuration from the position in the Periodic Table, but sometimes there are exceptions. Fortunately, Cl is easy.
Explanation:
Chlorine (Cl) is element 17, and it lies in the third row (period) in the next-to-last column. The previous rare gas element is neon (Ne, element 10), which has a closed-shell configuration:
Chlorine has this core configuration, plus 7 valence electrons in the