Noble Gases and Their Properties

These flashcards cover key concepts related to noble gases, their properties, and their applications.

Noble Gases

A group of elements in Group 18 that includes helium, neon, argon, krypton, xenon, and radon.

Valence Shell

The outermost shell of an atom that contains electrons; noble gases have full valence shells making them very stable.

Monatomic

Consisting of single atoms; noble gases exist as individual atoms rather than molecules.

Boiling Point

The temperature at which a liquid becomes a gas; boiling points increase down the group due to larger atomic size.

Inert Gases

Another term previously used for noble gases, reflecting their low reactivity in chemical reactions.

Helium

A noble gas used to fill party balloons and airships due to its low density.

Xenon

A noble gas used in car headlights and as a propellant for satellites; known for producing a bright light.

Krypton

A noble gas used in lasers, flat panel displays, and as an insulating filler in double glazing.

Radon

A radioactive noble gas used in radiotherapy for cancer treatment.

Stable Elements

Elements that do not easily react with others; noble gases are known for their stability due to a full valence shell.