Practice: What is the velocity (in m/s) of an electron that has a wavelength of 3.13 x 105 pm? (Mass of an electron = 9.11 x 10-31 kg).
The De Broglie Wavelength equation relates wavelength to velocity or speed.
Concept #1: The De Broglie Wavelength Equation
Example #1: Find the wavelength of a proton with a speed of 6.25 x 105 m/s. (Mass of a proton = 1.67 x 10-27 kg)
Practice: What is the velocity (in m/s) of an electron that has a wavelength of 3.13 x 105 pm? (Mass of an electron = 9.11 x 10-31 kg).
Practice: The faster an electron is moving, the _________ its kinetic energy, and the __________ its wavelength.
Practice: Consider an atom traveling at 1% the speed of light. The de Broglie wavelength is found to be 7.1316 x 10-39 m. Which element is this?
