Which of the following is/are correct?

Options

A. the energy of an electron depends only on the principal quantum number not on the other quantum numbers
B. the energy of an electron depends only on the principal quantum number in case of hydrogen and hydrogen like atoms
C. The different in potential energies of any two energy level is always more than the different in kinetic energies of these two levels
D. An electron in ground state can emit a photon

Answer

B, C

Explanation

Quantum numbers concept `(P.E)/(K.E) =- 2`