A. The ions in a crystal are well arranged
B. The lines in a diffraction grating cannot reflect X-rays.
C. The penetration power of X-rays is high in a diffraction grating
D. The wavelengths of X-rays are of the same order of magnitude as the separation between atoms in a crystal
Correct Answer: The wavelengths of X-rays are of the same order of magnitude as the separation between atoms in a crystal ✔
Last Updated: January 20, 2021