At standard pressure which substance becomes less soluble as temperature increases from 10. °c to 80.°c

20 At standard pressure, which substance becomes less soluble in water as temperature increases from 10.oC to 80.OC? (1) HCl (2) KCl (3)NaCl (4)NH4Cl1Use Table G, HCl is a gas and slopes down

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