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oxygen vs hydrogen

Input interpretation

oxygen (chemical element) | hydrogen (chemical element)
oxygen (chemical element) | hydrogen (chemical element)

Periodic table location

Periodic table location
Periodic table location

Images

Images
Images

Basic elemental properties

| oxygen | hydrogen atomic symbol | O | H atomic number | 8 | 1 short electronic configuration | [He]2s^22p^4 | 1s^1 Aufbau diagram | 2p 2s | 1s block | p | s group | 16 | 1 period | 2 | 1 atomic mass | 15.999 u | 1.008 u half-life | (stable) | (stable)
| oxygen | hydrogen atomic symbol | O | H atomic number | 8 | 1 short electronic configuration | [He]2s^22p^4 | 1s^1 Aufbau diagram | 2p 2s | 1s block | p | s group | 16 | 1 period | 2 | 1 atomic mass | 15.999 u | 1.008 u half-life | (stable) | (stable)

Thermodynamic properties

| oxygen | hydrogen phase at STP | gas | gas melting point | -218.3 °C | -259.14 °C boiling point | -182.9 °C | -252.87 °C critical temperature | 154.59 K | 32.97 K critical pressure | 5.043 MPa | 1.293 MPa molar heat of fusion | 0.222 kJ/mol | 0.558 kJ/mol molar heat of vaporization | 3.41 kJ/mol | 0.452 kJ/mol specific heat at STP | 919 J/(kg K) | 14300 J/(kg K) adiabatic index | 7/5 | 7/5 (properties at standard conditions)
| oxygen | hydrogen phase at STP | gas | gas melting point | -218.3 °C | -259.14 °C boiling point | -182.9 °C | -252.87 °C critical temperature | 154.59 K | 32.97 K critical pressure | 5.043 MPa | 1.293 MPa molar heat of fusion | 0.222 kJ/mol | 0.558 kJ/mol molar heat of vaporization | 3.41 kJ/mol | 0.452 kJ/mol specific heat at STP | 919 J/(kg K) | 14300 J/(kg K) adiabatic index | 7/5 | 7/5 (properties at standard conditions)

Material properties

| oxygen | hydrogen density | 0.001429 g/cm^3 | 8.99×10^-5 g/cm^3 molar volume | 11200 cm^3/mol | 11200 cm^3/mol refractive index | 1.000271 | 1.000132 sound speed | 317.5 m/s | 1270 m/s thermal conductivity | 0.02658 W/(m K) | 0.1805 W/(m K) (properties at standard conditions)
| oxygen | hydrogen density | 0.001429 g/cm^3 | 8.99×10^-5 g/cm^3 molar volume | 11200 cm^3/mol | 11200 cm^3/mol refractive index | 1.000271 | 1.000132 sound speed | 317.5 m/s | 1270 m/s thermal conductivity | 0.02658 W/(m K) | 0.1805 W/(m K) (properties at standard conditions)

Electromagnetic properties

| oxygen | hydrogen magnetic type | paramagnetic | diamagnetic volume magnetic susceptibility | 1.90772×10^-6 | -2.23×10^-9 mass magnetic susceptibility | 1.335×10^-6 m^3/kg (cubic meters per kilogram) | -2.48×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 4.27184×10^-8 m^3/mol (cubic meters per mole) | -4.999×10^-11 m^3/mol (cubic meters per mole) color | (colorless) | (colorless) refractive index | 1.000271 | 1.000132
| oxygen | hydrogen magnetic type | paramagnetic | diamagnetic volume magnetic susceptibility | 1.90772×10^-6 | -2.23×10^-9 mass magnetic susceptibility | 1.335×10^-6 m^3/kg (cubic meters per kilogram) | -2.48×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 4.27184×10^-8 m^3/mol (cubic meters per mole) | -4.999×10^-11 m^3/mol (cubic meters per mole) color | (colorless) | (colorless) refractive index | 1.000271 | 1.000132

Reactivity

| oxygen | hydrogen valence | 2 | 1 electronegativity | 3.44 | 2.2 electron affinity | 141 kJ/mol (kilojoules per mole) | 72.8 kJ/mol (kilojoules per mole) first ionization energy | 1313.9 kJ/mol (kilojoules per mole) | 1312 kJ/mol (kilojoules per mole) ionization energies | 1313.9 kJ/mol | 3388.3 kJ/mol | 5300.5 kJ/mol | 7469.2 kJ/mol | 10989.5 kJ/mol | 13326.5 kJ/mol | 71330 kJ/mol | 84078 kJ/mol | 1312 kJ/mol
| oxygen | hydrogen valence | 2 | 1 electronegativity | 3.44 | 2.2 electron affinity | 141 kJ/mol (kilojoules per mole) | 72.8 kJ/mol (kilojoules per mole) first ionization energy | 1313.9 kJ/mol (kilojoules per mole) | 1312 kJ/mol (kilojoules per mole) ionization energies | 1313.9 kJ/mol | 3388.3 kJ/mol | 5300.5 kJ/mol | 7469.2 kJ/mol | 10989.5 kJ/mol | 13326.5 kJ/mol | 71330 kJ/mol | 84078 kJ/mol | 1312 kJ/mol
Reactivity
Reactivity

Atomic properties

| oxygen | hydrogen term symbol | ^3P_2 | ^2S_(1/2) atomic radius | 60 pm | 25 pm covalent radius | 66 pm | 31 pm van der Waals radius | 152 pm | 120 pm (electronic ground state properties)
| oxygen | hydrogen term symbol | ^3P_2 | ^2S_(1/2) atomic radius | 60 pm | 25 pm covalent radius | 66 pm | 31 pm van der Waals radius | 152 pm | 120 pm (electronic ground state properties)

Abundances

| oxygen | hydrogen universe abundance | 1 mass% | 75 mass% solar abundance | 0.9 mass% | 75 mass% meteorite abundance | 40 mass% | 2.4 mass% crust abundance | 46 mass% | 0.15 mass% ocean abundance | 86 mass% | 11 mass% human abundance | 61 mass% | 10 mass% universe molar abundance | 0.08 mol% | 93 mol% solar molar abundance | 0.07 mol% | 93 mol% meteorite molar abundance | 48 mol% | 17 mol% ocean molar abundance | 33 mol% | 66 mol% crust molar abundance | 60 mol% | 3.1 mol% human molar abundance | 24 mol% | 62 mol%
| oxygen | hydrogen universe abundance | 1 mass% | 75 mass% solar abundance | 0.9 mass% | 75 mass% meteorite abundance | 40 mass% | 2.4 mass% crust abundance | 46 mass% | 0.15 mass% ocean abundance | 86 mass% | 11 mass% human abundance | 61 mass% | 10 mass% universe molar abundance | 0.08 mol% | 93 mol% solar molar abundance | 0.07 mol% | 93 mol% meteorite molar abundance | 48 mol% | 17 mol% ocean molar abundance | 33 mol% | 66 mol% crust molar abundance | 60 mol% | 3.1 mol% human molar abundance | 24 mol% | 62 mol%

Nuclear properties

| oxygen | hydrogen half-life | (stable) | (stable) stable isotopes | O-16 (99.762%) | O-18 (0.2%) | O-17 (3.8×10^-4) | H-1 (99.985%) | H-2 (1.5×10^-4) nuclear spin | O-12: 0^+ | O-13: 3/2^- | O-14: 0^+ | O-15: 1/2^- | O-16: 0^+ | O-17: 5/2^+ | O-18: 0^+ | O-19: 5/2^+ | O-20: 0^+ | O-21: 5/2^+ | O-22: 0^+ | O-23: 1/2^+ | O-24: 0^+ | O-25: 3/2^+ | O-26: 0^+ | O-27: 3/2^+ | O-28: 0^+ | H-1: 1/2^+ | H-2: 1^+ | H-3: 1/2^+ | H-4: 2^- | H-5: 1/2^+ | H-6: 2^- | H-7: 1/2^+ unstable isotopes | O-15 (122.24 s) | O-14 (70.606 s) | O-19 (26.88 s) | O-20 (13.51 s) | O-21 (3.42 s) | O-22 (2.25 s) | O-23 (82 ms) | O-24 (65 ms) | O-13 (8.58 ms) | O-27 (260 ns) | O-28 (100 ns) | O-25 (50 ns) | O-26 (40 ns) | O-12 (1.14 zs) | H-3 (12.32 yr) | H-6 (0.29 zs) | H-4 (0.139 zs) | H-5 (0.08 zs) | H-7 (0.023 zs) neutron cross-section | 2.8×10^-4 b | 0.332 b neutron mass absorption | 1×10^-6 m^2/kg | 0.011 m^2/kg
| oxygen | hydrogen half-life | (stable) | (stable) stable isotopes | O-16 (99.762%) | O-18 (0.2%) | O-17 (3.8×10^-4) | H-1 (99.985%) | H-2 (1.5×10^-4) nuclear spin | O-12: 0^+ | O-13: 3/2^- | O-14: 0^+ | O-15: 1/2^- | O-16: 0^+ | O-17: 5/2^+ | O-18: 0^+ | O-19: 5/2^+ | O-20: 0^+ | O-21: 5/2^+ | O-22: 0^+ | O-23: 1/2^+ | O-24: 0^+ | O-25: 3/2^+ | O-26: 0^+ | O-27: 3/2^+ | O-28: 0^+ | H-1: 1/2^+ | H-2: 1^+ | H-3: 1/2^+ | H-4: 2^- | H-5: 1/2^+ | H-6: 2^- | H-7: 1/2^+ unstable isotopes | O-15 (122.24 s) | O-14 (70.606 s) | O-19 (26.88 s) | O-20 (13.51 s) | O-21 (3.42 s) | O-22 (2.25 s) | O-23 (82 ms) | O-24 (65 ms) | O-13 (8.58 ms) | O-27 (260 ns) | O-28 (100 ns) | O-25 (50 ns) | O-26 (40 ns) | O-12 (1.14 zs) | H-3 (12.32 yr) | H-6 (0.29 zs) | H-4 (0.139 zs) | H-5 (0.08 zs) | H-7 (0.023 zs) neutron cross-section | 2.8×10^-4 b | 0.332 b neutron mass absorption | 1×10^-6 m^2/kg | 0.011 m^2/kg

Identifiers

| oxygen | hydrogen CAS number | 7782-44-7 | 1333-74-0 PubChem CID number | 977 | 783
| oxygen | hydrogen CAS number | 7782-44-7 | 1333-74-0 PubChem CID number | 977 | 783

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