The wavelength of an electron whose velocity is 1.7 ã 104 m/s and whose mass is 9.1 ã 10-28 g is m. the wavelength of an electron whose velocity is 1.7 ã 104 m/s and whose mass is 9.1 ã 10-28 g is m. 12 4.3 ã 10-8 4.3 ã 10-11 2.3 ã 10-7 2.3 ã 107

Mass of the electron = 9.1 x 10 ^ -28g = 9.1 x 10 ^ -31kg Velocity of the electron = 1.7 x 10 ^ 4 We have Planck Constant h = 6.626 x 10 ^ -34 Wavelength of the electron w = h/mv w = 6.626 x 10 ^ -34 / ((9.1 x 10 ^ -31)(1.7 x 10 ^ 4)) = 6.626 x 10 ^ -34 / 15.47 x 10 ^ -27 = 0.428312 x 10 ^ -7 = 4.28 x 10 ^ -8 m