The ground state energy of a hydrogen atom is $-13.6 \, eV$. What is the potential energy of the electron in this state in $eV$ (in $, eV$)?

The minimum energy required to excite a hydrogen atom from its ground state is.....$ eV$.

The total energy of an electron in the first excited state of the hydrogen atom is about $-3.4 \; eV.$
$(a)$ What is the kinetic energy of the electron in this state?
$(b)$ What is the potential energy of the electron in this state?
$(c)$ Which of the answers above would change if the choice of the zero of potential energy is changed?

The ionisation energy of a hydrogen atom is $13.6 \, eV$. Following Bohr's theory,the energy corresponding to a transition between the $3^{rd}$ and the $4^{th}$ orbit is.....$eV$.

The total energy of an electron in an atom in an orbit is $-3.4 \; eV$. Its kinetic and potential energies are,respectively:

Which of the following transitions in hydrogen atoms emit photons of highest frequency?