I learned [a simplified
model]. Show exactly where it
stops working, what
phenomenon breaks it, and
what the next model up does
differently.

Where the Simple Model Breaks

The edge of the model you were taught, and what's past it.

Prompt

I learned [a simplified chemical model — electron shells, ideal gases, Lewis structures]. Show me exactly where it stops working, what phenomenon breaks it, and what the next model up does differently.