Considering no electronic repulsion in Helium atom what will be Bohr's energy for both the electrons ? Bohr's energy of ground state of `H-` atom is `- 13.6 eV`

A photon of energy 12.09 eV is absorbed by an electron in ground state of a hydrogen atoms. What will be the energy level of electron ? The energy of electron in the ground state of hydrogen atom is -13.6 eV

A photon of energy 12.09 eV is absorbed by an electron in ground state of a hydrogen atoms. What will be the energy level of electron ? The energy of electron in the ground state of hydrogen atom is -13.6 eV

The energy of the electron in the ground state of H-atom is -13.6 eV . Its energy in the second orbit is

If the energy of an electron in the second Bohr orbit of H-atom is -E, what is the energy of the electron in the Bohr's first orbit?