What is the momentum of a wavelength= 0.015nm X-ray photon?

p= in kg*m/s

Please help I am confused. Thank you.

2 answers

Photon momentum is

p = h*(frequency)/c
= [h*c/(wavelength)]/c
= h/(wavelength)

where h is Planck's constant

web.utk.edu/~cnattras/Phys250Fall2012/modules/module%201/photons.htm
Thank you :)