kinetic theory - Why doesn't Helium behave as an ideal gas? - Physics Stack Exchange

I am a bit confused (might be due to some conceptual misunderstanding) as to why doesn't Helium behave as an ideal gas (it shows a deviation from the $pV$ vs $p$ graph)? (Given the fact that it is

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statistical mechanics - If liquid and gas are both chaotic states of matter, what's the difference between them on the molecular level? - Physics Stack Exchange

Derivation of Ideal gas law from kinetic theory - Physics Stack Exchange

Lectures on Quantum Mechanics. With Problems, Exercises and Solutions [3 ed.] 9783031176340, 9783031176357

13.4 Kinetic Theory: Atomic and Molecular Explanation of Pressure and Temperature – College Physics: OpenStax

Is helium the noble gas that acts most like an ideal gas? - Quora

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What are alpha particles? Do they have a charge or mass? If so, how can they pass through matter without any harm to their structure (like beta and gamma rays)? - Quora

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quot;Surely You're Joking, Mr. Feynman!" - Philosophy Circle

atomic physics - Physical reason for Helium-hole? - Physics Stack Exchange

kinetic theory - Why doesn't Helium behave as an ideal gas? - Physics Stack Exchange

photoelectric effect - Why does classical physics imply every mode of vibration should have the same thermal energy? - Physics Stack Exchange

The Journal of Science Extension Research – Vol. 2, 2023 by Science curriculum team – NSW Department of Education - Issuu