A radioactive atom emits a gamma-ray photon, and as a result, _________. o the ground state energy is decreased o none of these o the charge in the nucleus is decreased o the energy of the nucleus is...

A radioactive atom emits a gamma-ray photon, and as a result, _________.

o the ground state energy is decreased
o none of these
o the charge in the nucleus is decreased
o the energy of the nucleus is decreased
o the force on an orbiting electron is decreased