In X-ray crystallography, the atoms which can diffract X-rays and thus be located within 3-dimensional space are the following EXCEPT for
A) hydrogen
B) carbon
C) nitrogen
D) oxygen
E) sulfur

Question

Quizplus · Accepted Answer

Hydrogen does not have sufficient electron density to diffract X-rays, so it cannot be located through X-ray crystallography. The other listed atoms (carbon, nitrogen, oxygen, and sulfur) can all be located through this technique.

In X-Ray Crystallography, the Atoms Which Can Diffract X-Rays and Thus