hydrogen vs chlorine vs oxygen vs fluorine

hydrogen (chemical element) | chlorine (chemical element) | oxygen (chemical element) | fluorine (chemical element)

Periodic table location

Images

| atomic symbol | atomic number | short electronic configuration hydrogen | H | 1 | 1s^1 chlorine | Cl | 17 | [Ne]3s^23p^5 oxygen | O | 8 | [He]2s^22p^4 fluorine | F | 9 | [He]2s^22p^5 | Aufbau diagram | block | group hydrogen | 1s | s | 1 chlorine | 3p 3s | p | 17 oxygen | 2p 2s | p | 16 fluorine | 2p 2s | p | 17 | period | atomic mass | half-life hydrogen | 1 | 1.008 u | (stable) chlorine | 3 | 35.45 u | (stable) oxygen | 2 | 15.999 u | (stable) fluorine | 2 | 18.998403163 u | (stable)

phase at STP | all | gas melting point | median | -218.9 °C | highest | -101.5 °C (chlorine) | lowest | -259.14 °C (hydrogen) | distribution | boiling point | median | -185.5 °C | highest | -34.04 °C (chlorine) | lowest | -252.87 °C (hydrogen) | distribution | critical temperature | median | 149.36 K | highest | 416.9 K (chlorine) | lowest | 32.97 K (hydrogen) | distribution | critical pressure | median | 5.108 MPa | highest | 7.991 MPa (chlorine) | lowest | 1.293 MPa (hydrogen) | distribution | molar heat of fusion | median | 0.41 kJ/mol | highest | 3.2 kJ/mol (chlorine) | lowest | 0.222 kJ/mol (oxygen) molar heat of vaporization | median | 3.34 kJ/mol | highest | 10.2 kJ/mol (chlorine) | lowest | 0.452 kJ/mol (hydrogen) | distribution | specific heat at STP | median | 871 J/(kg K) | highest | 14300 J/(kg K) (hydrogen) | lowest | 478.2 J/(kg K) (chlorine) adiabatic index | all | 7/5 (properties at standard conditions)

density | median | 0.001562 g/cm^3 | highest | 0.003214 g/cm^3 (chlorine) | lowest | 8.99×10^-5 g/cm^3 (hydrogen) | distribution | molar volume | median | 11200 cm^3/mol | highest | 11200 cm^3/mol (hydrogen) | lowest | 11030 cm^3/mol (chlorine) | distribution | refractive index | median | 1.000233 | highest | 1.000773 (chlorine) | lowest | 1.000132 (hydrogen) sound speed | median | 317.5 m/s | highest | 1270 m/s (hydrogen) | lowest | 206 m/s (chlorine) | distribution | thermal conductivity | median | 0.0271 W/(m K) | highest | 0.1805 W/(m K) (hydrogen) | lowest | 0.0089 W/(m K) (chlorine) (properties at standard conditions)

valence | median | 1.5 | highest | 5 (chlorine) | lowest | 1 (hydrogen and fluorine) | distribution | electronegativity | median | 3.3 | highest | 3.98 (fluorine) | lowest | 2.2 (hydrogen) | distribution | electron affinity | median | 235 kJ/mol (kilojoules per mole) | highest | 349 kJ/mol (kilojoules per mole) (chlorine) | lowest | 72.8 kJ/mol (kilojoules per mole) (hydrogen) | distribution | first ionization energy | median | 1312.9 kJ/mol (kilojoules per mole) | highest | 1681 kJ/mol (kilojoules per mole) (fluorine) | lowest | 1251.2 kJ/mol (kilojoules per mole) (chlorine) | distribution |

term symbol | all | ^2P_(3/2) | ^2S_(1/2) | ^3P_2 atomic radius | median | 55 pm | highest | 100 pm (chlorine) | lowest | 25 pm (hydrogen) | distribution | covalent radius | median | 62 pm | highest | 102 pm (chlorine) | lowest | 31 pm (hydrogen) | distribution | van der Waals radius | median | 150 pm | highest | 175 pm (chlorine) | lowest | 120 pm (hydrogen) | distribution | (electronic ground state properties)

universe abundance | median | 0.5 mass% | highest | 75 mass% (hydrogen) | lowest | 4×10^-5 mass% (fluorine) solar abundance | median | 0.45 mass% | highest | 75 mass% (hydrogen) | lowest | 5×10^-5 mass% (fluorine) meteorite abundance | median | 1.2 mass% | highest | 40 mass% (oxygen) | lowest | 0.0087 mass% (fluorine) crust abundance | median | 0.1 mass% | highest | 46 mass% (oxygen) | lowest | 0.017 mass% (chlorine) ocean abundance | median | 6.5 mass% | highest | 86 mass% (oxygen) | lowest | 1.3×10^-4 mass% (fluorine) human abundance | median | 5.1 mass% | highest | 61 mass% (oxygen) | lowest | 0.0037 mass% (fluorine) universe molar abundance | median | 0.04 mol% | highest | 93 mol% (hydrogen) | lowest | 3×10^-6 mol% (fluorine) solar molar abundance | median | 0.035 mol% | highest | 93 mol% (hydrogen) | lowest | 3×10^-6 mol% (fluorine) meteorite molar abundance | median | 8.5 mol% | highest | 48 mol% (oxygen) | lowest | 0.0097 mol% (fluorine) ocean molar abundance | median | 17 mol% | highest | 66 mol% (hydrogen) | lowest | 4.2×10^-5 mol% (fluorine) | distribution | crust molar abundance | median | 1.6 mol% | highest | 60 mol% (oxygen) | lowest | 0.0099 mol% (chlorine) human molar abundance | median | 12 mol% | highest | 62 mol% (hydrogen) | lowest | 0.0012 mol% (fluorine) | distribution |