Periodic System for Chemists
Table
10
20.18

Ne

Neon

Identification

CAS Number: 7440-01-9
Discovery Year: 1898
Discoverer: Sir William Ramsey, M.W. Travers
Discovery Location: England

Properties

Atomic Mass: 20.1797 →Density: 0.000825 g/cm³ →
Crust Abundance: 0.005 mg/kg
Crystal Structure: FCC

Atomic Dimensions

Atomic Radius: 160 pm →
Atomic Radius (Rahm): 156 pm
Covalent Radius: 57.99999999999999 pm →
Van der Waals Radius: 154 pm
Atomic Volume: 16.8 cm³/mol
Lattice Constant: 4.43 Å

Thermodynamics

Melting Point: 48 K →Boiling Point: 27.1 K →Specific Heat: 1.029 J/(g·K) →Heat of Vaporization: 1.74 kJ/mol →

Electronic Structure

Electron Config: [He] 2s2 2p6
Block: p
Period: 2 →Group: 18 →
Oxidation States: 0

Abundance & Geochemistry

Crust Abundance: 0.005 mg/kg
Sea Abundance: 0.00011999999999999999 mg/L
Geochemical Class: volatile
Goldschmidt Class: atmophile

About

Neon is a noble gas that produces an orange-red glow when electricity passes through it. It is used in neon signs, lasers, and as a coolant.

Isotopes

Ne-20 20 90.48%
Ne-22 22 9.25%
Ne-21 21 0.2700%