Question

Which one of the following is not the electronic configuration of atom of a noble gas?

• A. 1s^2
• B. 1s^2 2s^2
• C. 1s^2 2s^2 2p^6
• D. 1s^2 2s^2 2p^6 3s^2 3p^6

Answer 1

Answer:

B. 1s^2 2s^2