Can a hydrogen atom emit characteristic X-ray?

Calculate the wavelength of the emitted characteristic X-ray from a tungsten (Z = 74) target when an electrons drops from an M shell to a vacancy in the shell.

Solid targets of different elements are bombarded by highly energetic electron beam. The frequcny (f) of the characteristic X -rays emitted from different targets varies with atomic number Z as

STATEMENT-1: In an X-ray tube, the wavelengths of the characteristic X-rays depends on the metal used as target. STATEMENT-2: Metals atomic numbers are best suited for the production of X-rays

The wavelength lambda of the K_(a) line of characteristic X - ray spectra varies with atomic number approximately

Which of the following electronic transition in hydrogen atom will emit largest amount of energy?

The ionisation energies of K-shell for cobalt, copper, and molebdenum are 7.8, 9.0 and 20.1 KeV respectively. If any metal out of these is used as target in an X-ray tube operated at 15KV , then (a) the K-series of characteristic X-rays will be emitted only by cobalt (b) the K-series of characteristic X-rays will be emitted only by cobalt & Cu (c) the K-series of characteristic X-rays will be emitted only by cobalt, Cu , Co and Mo (d) the minimum wavelength of continuous X-rays emitted by the three metals will be same

Whenever a hydrogen atom emits photon in the Balmer series: