Which of the following represents a system that is completely open? a capped soda bottle a pressurized canister of helium gas a pressure cooker a pot of boiling water

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.

And a) oxygen i believe