* Ideal gas law is a model: The ideal gas law is a theoretical model that assumes gas particles have no volume and don't interact with each other. These assumptions are never *completely* true in reality.
* Real gases deviate: All real gases deviate from ideal behavior to some degree, especially at high pressures and low temperatures.
However, some gases are closer to ideal behavior than others under normal conditions:
1. Helium (He): Helium is known for being very close to ideal gas behavior at normal temperatures and pressures. This is because helium atoms are very small and weakly interact with each other.
2. Neon (Ne): Neon, like helium, is a noble gas with very weak interatomic forces. It also exhibits behavior close to ideal under standard conditions.
Important Note: Even helium and neon will deviate from ideal behavior at extreme conditions (like very high pressures or very low temperatures).
