Question

Give the electron configuration for the chloride ion. (please show the process!) =)

Answer 1

Answer:-
`1s^22s^22p^63s^23p^6`

Explanations:- Atomic number of chlrone(Cl) is 17 it means it has 17 electrons. It's electron configuration is:
`1s^22s^22p^63s^23p^5` .

Chloride ion is formed when Cl accepts one electron:

`Cl+e^-\rightarrow Cl^-`

So, electrons for the chloride ion = 17+1 = 18

If we look at the electron configuration of Cl then 3p is still vacant as there are 5 electrons in it and it could have maximum 6 electrons. So, this 18th electron goes to 3p and the electron configuration of chloride ion becomes:

`1s^22s^22p^63s^23p^6` .