The energy of electron in the nth Bohr orbit of H-atom is :
In the nth orbit, the energy of an electron En=−13.6n2 eV for hydrogen atom. The energy required to take the electron from first orbit to second orbit will be
The energy of an electron in the first Bohr orbit of H - atom is - 13.6 eV. Then, which of the following statement(s) is/are correct for He+ ?