* Electron Configuration: Fluorine has an atomic number of 9, meaning it has 9 protons and 9 electrons. Its electron configuration is 1s² 2s² 2p⁵.
* Energy Levels: The numbers before the orbitals (1 and 2) represent the energy levels.
* The first energy level (n=1) has the 1s orbital.
* The second energy level (n=2) has the 2s and 2p orbitals.
* Electron Count:
* The 2s orbital holds 2 electrons.
* The 2p orbital holds 5 electrons.
Therefore, the second energy level of a fluorine atom has a total of 7 electrons (2 + 5).
