If a scientist ,doing an experiment to determine the density of an unknown solid, calculates a percent yield above 100%, what is a likely error that could have caused this result

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.

Ibelieve the answer is d. titaniumhope my answer has you : )

Ithink chemical bonding