200 g object with a volume of 200 ml

100 g object with a volume of 50 ml

1 g object with a volume of 10 ml

10 g object with a volume of 1 ml

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.

60.0 - there are 3 significant numbers