For the energy levels in an atom which one of the following statements is correct?

Options

A. The 4s sub-energy level is at a higher energy than the 3d sub-energy level
B. The M-energy level can have maximum of 32 electrons
C. The second principal energy level can have four orbitals and contain a maximum of 8 electrons
D. The `5^(th)` main energy level can have maximum of 72 electrons

Answer

C