Question

If an energy level has each of these types of orbitals, then how many copies of it does it contain? Also, if each copy of an orbital can hold up to 2 electrons, then how many total electrons in that type of orbital are present in the energy level?

Answer 1

The s level contains just one orbital that it can be filled just with 2electrones, p' level has three orbitals(px,py,pz) and can be added just 6electrons, the d' level (5orbitals=10electrones), the f' level( 7orbitals= 14electrones) .
Remember each orbital has just 2electrones that are antiparalel.