Why does the ball go here?
Extra Stability!
1. Claw & Slanted LEGO Tray (機械爪積木斜台)
Tap tray to drop ball!
--- Dashed Lines = Aligned Shelves ---
2. Subshell Box Diagram (對齊櫃桶格仔圖)
Each box row lines up directly with the LEGO shelf on the left!
Aligned
Tap box for e- #1:
Same height = Same energy level
Max 2 e- / box (↑↓)
LOWEST ENERGY LEVEL (CLOSEST TO NUCLEUS)
Up (↑) & Down (↓) = Opposite Spins
Pauli Exclusion Principle