Waves and Electrons

Review

Wavelength & Frequency

A line of emission from Potassium has a wavelength of 600nm. What is the wave’s frequency?

*** 1m = 1,000,000,000nm ***

c =

Find the wavelengths of three Yuma radio stations.

Ex.

100.9 MHz

98.3 MHz

*** 1MHz = 1,000,000 Hz ***

c =

Energy of Waves

• Calculate the energy of a gamma ray with a frequency of 6.0 1022 Hz.

• Calculate the frequency of a wave that has 4.58 10-21 J of energy

E = h

• Calculate the energy of two Yuma AM radio station waves

• 1400kHz

*** 1kHz = 1000hz ***

E = h

Emission Spectrum

• What type of radiation is emitted when an electron moves down to level 1?

• What color is emitted when an electron goes from level 4 level 2?

• What transition creates the color red?

• What transition produces infrared light?

Emission and the Bohr Model