5. The main energy levels of an atom are indicated by the
A) orbital quantum numbers.
B) magnetic quantum numbers.
C) spin quantum numbers.
D) principal quantum numbers.

Question

5.	The main energy levels of an atom are indicated by the
A)	orbital quantum numbers.
B)	magnetic quantum numbers.
C)	spin quantum numbers.
D)	principal quantum numbers.

caozeyuan · Answer

What what?! energy level of atom? are you sure that is not a typo becuase energy level should describe electrons

photon336 · Answer

what do you think it is?

michele_laino · Answer

hint:
for example, the Bohr energies $E_n$ of the atom of hydrogen are described by this formula:
$${E_n} = \frac{{ - 13.6}}{{{n^2}}}\left( {{\text{eV}}} \right)$$ where $n$ is the principal quantum number

sasquat · Answer

it should be orbital quantum numbers because electrons go in orbitals and quantum mechanics relates to electrons