Noble Gases

Flashcards for Noble Gases

Helium

Element symbol: He; Discovered: N/A; Origin of the Name: From Greek word 'Helios' meaning 'sun'; Atomic Number: 2; State at 20°C: Gas; Melting Point: -272.2°C; Uses: Balloons, airships, super-magnets

Neon

Element symbol: Ne; Discovered: 1898; Origin of the Name: From Greek word meaning 'New'; Atomic Number: 10; State at 20°C: Gas; Melting Point: -243.6°C; Uses: Neon signs, high voltage indicators.

Argon

Element symbol: Ar; Discovered: 1894; Origin of the Name: From Greek word 'Argos' meaning 'inactive'; Atomic Number: 18; State at 20°C: Gas; Melting Point: -189.4°C; Uses: Shielding in welding, lighting in high intensity bulbs.

Krypton

Element symbol: Kr; Discovered: 1898; Origin of the Name: From Greek word meaning 'hidden'; Atomic Number: 36; State at 20°C: Gas; Melting Point: -157.4°C; Uses: Photographs, high productive vacuum tubes.

Xenon

Element symbol: Xe; Discovered: 1898; Origin of the Name: From Greek word meaning 'strange'; Atomic Number: 54; State at 20°C: Gas; Melting Point: -111.8°C; Uses: Lighting in high intensity bulbs