Which description of ideal gases and real gases is true? The forces of attraction between molecules are greater in an ideal gas than in a real gas. The van der Waals equation is the same as the ideal gas law in some cases. Gaseous atoms of helium and argon behave the same as real gases but differently as ideal gases. The molecules in an ideal gas occupy more space than the molecules in a real gas. The measured pressure for ideal gases is smaller than for real gases