Question

1. label the number of protons, neutrons, and electrons that go into each energy level for the following atom: fluorine

Explanation:

Step1: Determine protons in Fluorine

Fluorine has an atomic number of 9, so protons ($p^+$) = 9.

Step2: Determine neutrons in Fluorine

Fluorine has an atomic mass of ~19, so neutrons ($n$) = 19 - 9 = 10.

Step3: Determine electron energy levels

First energy level (closest to nucleus) holds max 2 electrons. Second holds max 8, but Fluorine has 9 electrons: 2 in first, 7 in second (since 2 + 7 = 9, and third level isn't filled here).

Answer:

• $p^+$: 9
• $n$: 10
• First energy level (yellow) electrons: 2
• Second energy level (orange) electrons: 7
• Third energy level (purple) electrons: 0 (since 2 + 7 = 9, no electrons in third level for neutral Fluorine)