All noble gases are gases in their standard state
gases
At STP, all noble gases are gases. However, helium can be converted to liquid below-268.93 °C.
Xenon is a noble gas and an element and thus single phase
Gases may be elements, compounds, or mixtures. A gas is a phase state of matter.
Plasma (ionized gases).
Noble gases can't have a metallic, ionic or covalent bonds because their outer shells are full, therefore they are stable. They are gases because their molecules are far apart, causing its gaseous phase.
Plasma, then gases.
Noble gases do not normally form compounds.
The group that argon belongs to is the Noble Gases, otherwise known as the inert gases. However, Noble gases is the more acceptable term nowadays because the description inert implies that they cannot be reacted with. These Noble Gases such as argon can be reacted with, but they need incredibly extreme conditions to do such.
Noble gases do not react chemically with other noble gases.
inert gases / noble gases
Gases, hence noble "gases"