Final answer:
To calculate the de Broglie wavelength of an electron traveling at a given velocity, use the equation λ = h / mv, where λ is the de Broglie wavelength, h is Planck's constant, m is the mass of the electron, and v is the velocity of the electron.
Step-by-step explanation:
The de Broglie wavelength of an electron can be calculated using the de Broglie wavelength equation: λ = h / mv, where λ is the de Broglie wavelength, h is Planck's constant (6.626 x 10^-34 J·s), m is the mass of the electron, and v is the velocity of the electron.
To find the de Broglie wavelength, plug in the given values: m = mass of an electron (9.11 x 10^-31 kg) and v = velocity of the electron (1.22 x 10^5 m/s).
λ = (6.626 x 10^-34 J·s) / (9.11 x 10^-31 kg) / (1.22 x 10^5 m/s)
Calculate the value to find the de Broglie wavelength of the electron.