Which of the following electron configurations represents that of an atom in its ground state?
- 1s 22s12p1
- 1s22s22p63s13p1
- 1s22s12p3
-
1s22s22p63s0
The correct answer is: D
Explanation
The ground state of an electron, the energy level it normally occupies, is the state of lowest energy for that electron.