science 9 2nd

building blocks of matter

a model where electrons travel around the nucleus of an atom in distinct circular orbits, or shells

energy emitted in discrete packages

energy emitted in discrete packages

made the atomic model

helped and contributed to the bohrs-sommerfeld model

a model that tells us that electrons are a cloud surrounding the nucleus

proposed the quantum mechanical model of an atom

lowest energy that an electron can occupy

highest energy, farther from the nucleus