homework - When Z>1 are repulsive forces dominant or are attractive forces dominant?

According to PVreal = ZRT

If z >1 repulsive forces are dominant or are attractive forces? Different teachers are telling contradictory answers and after referring a few books, I have become more confused.

Points for ATTRACTIVE FORCES are dominant:

• At high pressure the molecules do not strike the walls with full impact as they are dragged back by attractive forces.


• When molecules are farther away from each other(as Vreal > Videal) the attractive forces are dominant.


• Repulsive force are dominant when he molecules are almost in contact .

Points for REPULSIVE FORCES are dominant:

• At high pressure the molecules are close each other that attractive forces are negligible but molecular size is significant.Thus repulsive forces are significant


• As volume of real gas is more than volume of ideal gas , the real gas is more difficult to compress.Thus repulsive forces are dominating.

There was a question where P = 12atm T = 350K and Z = 1.2(after calculation). It was given that repulsive force are dominant.But my teacher said it was wrong and it should be attractive forces.