Year: 2019
Topic: Atoms
Time :
1.
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, −6.8 eV
(2). 3.4 eV, −6.8 eV
(3). 3.4 eV, 3.4 eV
(4). −3.4 eV, −3.4 eV