The total energy of an electron in an atom in an orbit is –3.4 eV. Its kinetic and potential energies are, respectively:
(1) –3.4 eV, –3.4 eV
(2) –3.4 eV, –6.8 eV
(3) 3.4 eV, –6.8 eV
(4) 3.4 eV, 3.4 eV
(1) –3.4 eV, –3.4 eV
(2) –3.4 eV, –6.8 eV
(3) 3.4 eV, –6.8 eV
(4) 3.4 eV, 3.4 eV