Answer
The Compton wavelength for a proton is $~~1.32\times 10^{-15}~m$
Work Step by Step
We can find the Compton wavelength for a proton:
$\lambda = \frac{h}{mc}$
$\lambda = \frac{6.63\times 10^{-34}~J~s}{(1.67\times 10^{-27}~kg)(3.0\times 10^8~m/s)}$
$\lambda = 1.32\times 10^{-15}~m$
The Compton wavelength for a proton is $~~1.32\times 10^{-15}~m$