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Chemistry / Unit 2   Chem 0202 short lesson, about 20 seconds

The Nuclear Model of the Atom

Captions available

The idea

Rutherford's nuclear model places a small, dense, positively charged nucleus at an atom's center, surrounded by mostly empty space holding the electrons.

In practice

Scaling a nucleus to the size of a blueberry would scale the whole atom to roughly the size of a football stadium.

Where people slip

"Mostly empty" does not mean unstable; the nucleus's concentrated mass and charge govern how the atom behaves chemically.

Your place on the trail

Every lesson rests on earlier ones and opens later ones. Tap any to jump.

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