Which of the following statements is INCORRECT regarding the absorption spectrum of hydrogen?

(A) It consists of dark lines against a continuous background.

(B) The lines correspond to photons absorbed by the electron transitioning to higher energy levels.

(C) The wavelengths of the absorbed photons are identical to the wavelengths of the emitted photons in the emission spectrum.

(D) The absorption spectrum can be used to identify the presence of hydrogen in a sample.

When an electron jumps from a level $n = 4$ to $n = 1$, momentum of the recoiled hydrogen atom will be

Which of the following is associated with the emission of electromagnetic radiation by an atom?

The energy of a hydrogen atom in its ground state is $- 13.6\,\,eV$. The energy of the level corresponding to the quantum number $n = 2$ (first excited state) in the hydrogen atom is

First Bohr radius of an atom with $Z = 82$ is $R$. Radius of its third orbit is

When an electron in a hydrogen atom transitions from n=3 to n=2, the emitted radiation falls in which region of the electromagnetic spectrum?

The lines in the atomic spectrum of an element are characteristic of that element because:

Which of the following is true for number of spectral lines in going from Lyman series to $P$-fund series

An atom of element X has 15 protons and 15 electrons. Which of the following statements is true regarding atom X?

If an atom were to lose an electron, what would be the resulting charge?

The first line in the Lyman series has wavelength $\lambda$. The wavelength of the first line in Balmer series is