Sa se calculeze presiunea exercitarea de 2 moli de H2 aflat într un vas cu vol de 10 l la temp de 27 gc

It is true because i have took the test and it came out to be true

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.

It starts to rust i think