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noble gases

Input interpretation

noble gases
noble gases

Members

helium | neon | argon | krypton | xenon | radon | oganesson (total: 7)
helium | neon | argon | krypton | xenon | radon | oganesson (total: 7)

Periodic table location

Periodic table location
Periodic table location

Images

Images
Images

Basic elemental properties

atomic symbol | all | Ar | He | Kr | Ne | Og | Rn | Xe atomic number | median | 36  | highest | 118 (oganesson)  | lowest | 2 (helium)  | distribution |  block | all | p | s group | all | 18 period | all | 1 | 2 | 3 | 4 | 5 | 6 | 7 atomic mass | median | 83.798 u  | highest | 294 u (oganesson)  | lowest | 4.002602 u (helium)  | distribution |
atomic symbol | all | Ar | He | Kr | Ne | Og | Rn | Xe atomic number | median | 36 | highest | 118 (oganesson) | lowest | 2 (helium) | distribution | block | all | p | s group | all | 18 period | all | 1 | 2 | 3 | 4 | 5 | 6 | 7 atomic mass | median | 83.798 u | highest | 294 u (oganesson) | lowest | 4.002602 u (helium) | distribution |

Thermodynamic properties

phase at STP | all | gas melting point | median | -157.36 °C  | highest | -71 °C (radon)  | lowest | -248.59 °C (neon)  | distribution |  boiling point | median | -169.5 °C  | highest | -61.7 °C (radon)  | lowest | -268.93 °C (helium)  | distribution |  critical temperature | median | 180.14 K  | highest | 377 K (radon)  | lowest | 5.19 K (helium)  | distribution |  critical pressure | median | 5.2 MPa  | highest | 6.28 MPa (radon)  | lowest | 0.227 MPa (helium)  | distribution |  molar heat of fusion | median | 1.41 kJ/mol  | highest | 3 kJ/mol (radon)  | lowest | 0.02 kJ/mol (helium)  | distribution |  molar heat of vaporization | median | 7.8 kJ/mol  | highest | 17 kJ/mol (radon)  | lowest | 0.083 kJ/mol (helium)  | distribution |  specific heat at STP | median | 384.19 J/(kg K)  | highest | 5193.1 J/(kg K) (helium)  | lowest | 93.65 J/(kg K) (radon)  | distribution |  adiabatic index | all | 5/3 (properties at standard conditions)
phase at STP | all | gas melting point | median | -157.36 °C | highest | -71 °C (radon) | lowest | -248.59 °C (neon) | distribution | boiling point | median | -169.5 °C | highest | -61.7 °C (radon) | lowest | -268.93 °C (helium) | distribution | critical temperature | median | 180.14 K | highest | 377 K (radon) | lowest | 5.19 K (helium) | distribution | critical pressure | median | 5.2 MPa | highest | 6.28 MPa (radon) | lowest | 0.227 MPa (helium) | distribution | molar heat of fusion | median | 1.41 kJ/mol | highest | 3 kJ/mol (radon) | lowest | 0.02 kJ/mol (helium) | distribution | molar heat of vaporization | median | 7.8 kJ/mol | highest | 17 kJ/mol (radon) | lowest | 0.083 kJ/mol (helium) | distribution | specific heat at STP | median | 384.19 J/(kg K) | highest | 5193.1 J/(kg K) (helium) | lowest | 93.65 J/(kg K) (radon) | distribution | adiabatic index | all | 5/3 (properties at standard conditions)

Material properties

density | median | 0.00277 g/cm^3  | highest | 0.00973 g/cm^3 (radon)  | lowest | 1.785×10^-4 g/cm^3 (helium)  | distribution |  molar volume | median | 22410 cm^3/mol  | highest | 22800 cm^3/mol (radon)  | lowest | 22000 cm^3/mol (xenon)  | distribution |  refractive index | median | 1.000281  | highest | 1.000702 (xenon)  | lowest | 1.000035 (helium) sound speed | median | 970 m/s  | highest | 1120 m/s (krypton)  | lowest | 319 m/s (argon)  | distribution |  thermal conductivity | median | 0.0136 W/(m K)  | highest | 0.1513 W/(m K) (helium)  | lowest | 0.00361 W/(m K) (radon)  | distribution |  (properties at standard conditions)
density | median | 0.00277 g/cm^3 | highest | 0.00973 g/cm^3 (radon) | lowest | 1.785×10^-4 g/cm^3 (helium) | distribution | molar volume | median | 22410 cm^3/mol | highest | 22800 cm^3/mol (radon) | lowest | 22000 cm^3/mol (xenon) | distribution | refractive index | median | 1.000281 | highest | 1.000702 (xenon) | lowest | 1.000035 (helium) sound speed | median | 970 m/s | highest | 1120 m/s (krypton) | lowest | 319 m/s (argon) | distribution | thermal conductivity | median | 0.0136 W/(m K) | highest | 0.1513 W/(m K) (helium) | lowest | 0.00361 W/(m K) (radon) | distribution | (properties at standard conditions)

Reactivity

valence | median | 1  | highest | 6 (xenon and radon)  | lowest | 0 (3 elements)  | distribution |  electron affinity | median | 0 kJ/mol (kilojoules per mole)  | highest | 0 kJ/mol (kilojoules per mole) (6 elements)  | lowest | 0 kJ/mol (kilojoules per mole) (6 elements) first ionization energy | median | 1435.7 kJ/mol (kilojoules per mole)  | highest | 2372.3 kJ/mol (kilojoules per mole) (helium)  | lowest | 1037 kJ/mol (kilojoules per mole) (radon)  | distribution |
valence | median | 1 | highest | 6 (xenon and radon) | lowest | 0 (3 elements) | distribution | electron affinity | median | 0 kJ/mol (kilojoules per mole) | highest | 0 kJ/mol (kilojoules per mole) (6 elements) | lowest | 0 kJ/mol (kilojoules per mole) (6 elements) first ionization energy | median | 1435.7 kJ/mol (kilojoules per mole) | highest | 2372.3 kJ/mol (kilojoules per mole) (helium) | lowest | 1037 kJ/mol (kilojoules per mole) (radon) | distribution |

Atomic properties

term symbol | all | ^1S_0 atomic radius | median | 80 pm  | highest | 120 pm (radon)  | lowest | 31 pm (helium)  | distribution |  covalent radius | median | 111 pm  | highest | 150 pm (radon)  | lowest | 28 pm (helium)  | distribution |  van der Waals radius | median | 188 pm  | highest | 216 pm (xenon)  | lowest | 140 pm (helium)  | distribution |  (electronic ground state properties)
term symbol | all | ^1S_0 atomic radius | median | 80 pm | highest | 120 pm (radon) | lowest | 31 pm (helium) | distribution | covalent radius | median | 111 pm | highest | 150 pm (radon) | lowest | 28 pm (helium) | distribution | van der Waals radius | median | 188 pm | highest | 216 pm (xenon) | lowest | 140 pm (helium) | distribution | (electronic ground state properties)

Abundances

universe abundance | median | 0.02 mass%  | highest | 23 mass% (helium)  | lowest | 1×10^-6 mass% (xenon) solar abundance | median | 0.053 mass%  | highest | 23 mass% (helium)  | lowest | 0 mass% (oganesson) crust abundance | median | 1.6×10^-7 mass%  | highest | 1.5×10^-4 mass% (argon)  | lowest | 0 mass% (oganesson) ocean abundance | median | 7.2×10^-10 mass%  | highest | 4.5×10^-5 mass% (argon)  | lowest | 0 mass% (oganesson) universe molar abundance | median | 6×10^-4 mol%  | highest | 7.2 mol% (helium)  | lowest | 9×10^-9 mol% (xenon) solar molar abundance | median | 0.0036 mol%  | highest | 7.4 mol% (helium)  | lowest | 0 mol% (oganesson) ocean molar abundance | median | 1.6×10^-9 mol%  | highest | 7×10^-6 mol% (argon)  | lowest | 0 mol% (oganesson)  | distribution |  crust molar abundance | median | 1.5×10^-7 mol%  | highest | 7.8×10^-5 mol% (argon)  | lowest | 0 mol% (oganesson)
universe abundance | median | 0.02 mass% | highest | 23 mass% (helium) | lowest | 1×10^-6 mass% (xenon) solar abundance | median | 0.053 mass% | highest | 23 mass% (helium) | lowest | 0 mass% (oganesson) crust abundance | median | 1.6×10^-7 mass% | highest | 1.5×10^-4 mass% (argon) | lowest | 0 mass% (oganesson) ocean abundance | median | 7.2×10^-10 mass% | highest | 4.5×10^-5 mass% (argon) | lowest | 0 mass% (oganesson) universe molar abundance | median | 6×10^-4 mol% | highest | 7.2 mol% (helium) | lowest | 9×10^-9 mol% (xenon) solar molar abundance | median | 0.0036 mol% | highest | 7.4 mol% (helium) | lowest | 0 mol% (oganesson) ocean molar abundance | median | 1.6×10^-9 mol% | highest | 7×10^-6 mol% (argon) | lowest | 0 mol% (oganesson) | distribution | crust molar abundance | median | 1.5×10^-7 mol% | highest | 7.8×10^-5 mol% (argon) | lowest | 0 mol% (oganesson)