Inez is making a model of a sugar crystal. She wants her model to show how the sugar molecules move on the crystal. She is using plastic foam balls to represent the sugar molecules. How should she put the plastic foam balls together to make her model?

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.

The answer should be vaporization