In what phase do molecules flow and can travel far apart from one another? a. none b. liquid c. solid d. gas

Option D - Gas Because it is Mostly Empty spacw

D.gas because gas is basically air so can travel far

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.