How many eggs is 4 moles of eggs?

Each egg has 6.022x1023 moles in it so it would just be 4 moles

The correct answer is d

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.