Question

directions: create a bohr model of an atom by dragging each subatomic particle to the correct location on the model. if you need additional orbitals, you can change the slide layout.
atom
aluminum
electrons
protons
neutrons

Explanation:

Step1: Find Al's atomic number

Aluminum (Al) has an atomic number of 13, so it has 13 protons and 13 electrons. Its mass number is ~27, so neutrons = $27-13=14$.

Step2: Place protons/neutrons in nucleus

Drag 13 blue protons and 14 red neutrons into the innermost blue circle (nucleus).

Step3: Fill electron shells (Bohr rules)

First shell (closest to nucleus) holds max 2 electrons: drag 2 green electrons to the smallest inner orbit.

Step4: Fill second electron shell

Second shell holds max 8 electrons: drag 8 green electrons to the middle orbit.

Step5: Fill third electron shell

Remaining electrons: $13-2-8=3$: drag 3 green electrons to the outermost orbit.

Answer:

• Nucleus (inner blue circle): 13 protons, 14 neutrons
• Innermost orbit: 2 electrons
• Middle orbit: 8 electrons
• Outermost orbit: 3 electrons