Bohr Model

Describe the nucleus in Bohr’s model by comparing it to Rutherford’s.

Just like Rutherford, nucleus was tiny, dense, and positively-charged

Describe the diagram of Bohr’s model.

• Circles surrounding nucleus

• Light energy (hv) entering and leaving the atom

• Emission shown through electron getting closer to nucleus

• Absorption shown through electron getting further away from nucleus

Orbits

Spherical region where electrons are stable

• The closer to the nucleus, the _______ the energy level

• The further away from the nucleus, the ________ the energy level

• Slower

• Higher

Ground state vs excited state

• Ground state: When electrons are in their lowest energy orbital

Excited state: 10 or more electrons have been moved to a higher energy orbital (absorb energy)

Atomic Spectra

• Put electricity into a gas and it glows

• Puts light through a prism

In which orbits did Bohr calculate wavelengths based in?

Orbit 3 - orbit 2