# An electron has a wavelength of 239 nm. Find its momentum. Planck’s constant is 6.63*10^-34?

Nov 27, 2014

λ = h/p

There are three symbols in this equation:

a) λ stands for the wavelength of the particle
b) h stands for Planck's Constant
c) p stands for the momentum of the particle

λ = 239 x ${10}^{-} 9$ m
h = 6.63 x ${10}^{-} 34$ kg ${m}^{2}$ ${s}^{-} 1$
p = h / λ

p = 6.63 x ${10}^{-} 34$ kg ${m}^{2}$ ${s}^{-} 1$ / 239 x ${10}^{-} 9$ m

p = 0.0277 x ${10}^{-} 25$ kg m ${s}^{-} 1$