The statement that the student can most effectively articulate to clarify the distinction between radio waves and X-rays is:
"The greater energy of X-rays is reflected in their shorter wavelength."
This statement accurately explains the fundamental difference between radio waves and X-rays, emphasizing that the shorter wavelength of X-rays corresponds to higher energy, which contributes to their hazardous nature, while radio waves, with longer wavelengths, have lower energy and are considered safe.