Answered Feb 07, 2020
The electron configuration in the last one is incorrect. The answer should be argon with the number of electrons present.
Answered Nov 21, 2019
This is not the correct answer it is Argon Ar
Answered Nov 01, 2019
The answer given is not correct in potassium 3s sublevel has 2 electrons
Answered Sep 01, 2017
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