unit 3 p pt electromagnetic e

Emission and Absorption of Electromagnetic Energy

copper sodium lithium strontium

BOHR MODEL OF HYDROGEN ATOM

Electron circles the nucleus in fixed energy ranges called orbits (energy levels)

An electron can move f rom one energy level to another by gaining discrete amounts of energy.

Electron can not be found between energy levels (energy levels are like rungs on a ladder…..)

The lowest energy level is the closest to the nucleus.

BOHR MODEL OF HYDROGEN ATOM

Electron circles the nucleus in fixed energy ranges called orbits (energy levels)

An electron can move f rom one energy level to another by gaining discrete amounts of energy.

Electron can not be found between energy levels (energy levels are like rungs on a ladder…..)

The lowest energy level is the closest to the nucleus.

energy absorbed =

energy released =

energy of light produced*some of this light is part of the visible spectrum, and can be seen as unique colors for diff erent elements

Bohr model helped us to understand the movement of electrons around the nucleus.

However, the model does not account f or behavior of larger atoms with more than one electron.

Bohr model from reference table

When an electron falls f rom n = 6 to n = 2, what wavelength of light will be emitted?What is the region of the spectrum that corresponds to this wavelength?

When an electron falls from n = 6 to n = 2, what color of light will be emitted?

Wavelength vs Frequency

Inversely proportional (i.e. when one goes up, the other goes down)

http://amazing-space.stsci.edu/resources/explorations/light/makewaves-frames.html

Wave-Particle Duality of Electrons

Electrons act as waves as well as particles

Energy can act as particles as well as waves