Which type of electromagnetic wave has the shortest wavelength? A. X-rays
B. Infrared
C. Radio
D. Microwaves

A X-rays I think this is the answer

Gamma Radiation has the shortest wavelength. Order is as follows (shortest to longest wavelength): Gamma, X-Rays, UV, Visible, Infrared, Microwaves, Radio Waves.

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass