Hydrogen atom does not emit X-rays because

Question

Question

Answer 1

CONCEPT:

X-Rays are powerful waves of electromagnetic energy.
- Most of them have a wavelength ranging from 0.01 to 10 nanometres, corresponding to frequencies in the range of 30 petahertz to 30 exahertz.
- The energies of X-Rays are in the range of 100 eV to 100 keV.

EXPLANATION:

To emit energy, an electron must jump from a higher energy level to a low energy level.
To emit X-Rays, the difference in the higher and the lower energy levels to be large enough to produce an X-ray.
But in a hydrogen atom, energy levels are so close that even in the most energetic line emitted i.e., when an electron drops down from the second shell to the first, has only enough energy to be an ultraviolet photon. So hydrogen atoms do not emit X rays.
Hence, option 4 is the answer