How much heat is released when a 27.7 g sample of ethylene glycol (C = 2.42 J/gºC) at 42.76°C is cooled to 32.5°C

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.