Question

Can a hydrogen atom emit characteristic X-rays?

Answer 1

Hydrogen atom cannot emit X -Rays

Explanation:

We know that the Hydrogen has only 1 proton & 1 Electron, which helped the scientists to calculate the energy of electron in every shell.

But we know that Hydrogen is very minimum energetic. In order to be an ultraviolet photon its highly energetic line of Hydrogen has minimum energy (Electron of Hydrogen coming down from 2nd Shell to I).  

So, Hydrogen atom cannot emit X -Rays.