Energy Levels — MCQ Practice

The energy of an electron in the $n$-th orbit of a hydrogen atom is given by $E_n = -13.6/n^2 \text{ eV}$. What is the energy required to excite an electron from the first excited state to the third excited state?

Which of the following transitions in a hydrogen atom will emit a photon of the highest energy?

The radius of the first Bohr orbit for a hydrogen atom is $0.529 \mathring{A}$. What is the radius of the third Bohr orbit for a hydrogen-like ion with atomic number $Z=2$?

The ratio of the kinetic energy to the total energy of an electron in a Bohr orbit of a hydrogen atom is:

According to Bohr's model, the angular momentum of an electron in the third orbit of a hydrogen atom is:

If the electron in a hydrogen atom jumps from the $n=4$ state to the $n=2$ state, the wavelength of the emitted photon will be (R is Rydberg constant):