Question

008 10.0 points
Which statement gives the name and correct
principle which is used to determine the ar-
rangement of electrons in degenerate orbitals
when writing electron configurations?
1. Pauli Principle: only put one electron in
any orbital.
2. Hund’s rule: put one electron in each de-
generate orbital first, then add one more elec-
tron with an opposite spin to each orbital.
3. Mendeleev: leave unoccupied spaces in
the degenerate orbitals in case we discover
any new orbitals.
4. Aufbau priniciple: fill all degenerate or-
bitals first, then fill in any higher or lower
energy orbitals which are not degenerate.