Find the quantum number 'n' corresponding to the excited state of `He^+` ion if on transition to the ground state that ion emits two photons in succession with wavelengths 108.5 and 30.4 nm

What is the maximum number of emission lines when the excited electron of a H atom in n=6 drops to the ground state?

What is the maximum number of emission lines when the excited electron of H atoms in n=6 drops to the ground state?

The electron in a hydrogen atom is in n=2 state. When it drops to the ground state a photon is emitted. What is the wavelength of photon?

As an electron makes a transition from an excited state to the ground state of a hydrogen -like atom / ion

The electron in a hydrogen atom is excited to the n -th excited state. How many possible spectral lines can it emit in transtion to the ground state ?

The wavelength corresponding to a transition when electron falls from a certain quantum level to the ground state of an He^+ ion is 24.31 nm find the ratio of velocity of the electron in the next quantum level to that of velocity of light?

Show that the energy of (He_2^4) for first excited state is numerically equal to the ground state energy of Hydrogen atom..

The electron velocity in the first excited state of a hydrogen atom is v . When it emits a photon, it comes to the ground state and the electron velocity becomes 2v . Justify this increase in electron velocity even if some energy has been taken away by the emitted photon.

Atomic number of Helium is 2. what is the energy of the ground state of Hulium ion having single positive charge ?

Electron in a hydrogen atom undergoes transition from n_1 to n_2 , where n_1 and n_2 are the principal quantum numbers of two given states. According to Bohr's theory , if the time period of the electron in the initial state be eight times that in the final state , the possible values of n_1 and n_2 will be, respectively