Input interpretation
homonuclear diatomic molecules | element types
Summary
bromine | chlorine | fluorine | hydrogen | iodine | nitrogen | oxygen
Periodic table location
Periodic table location
Images
Images
Basic elemental properties
atomic symbol | all | Br | Cl | F | H | I | N | O atomic number | median | 9 | highest | 53 (iodine) | lowest | 1 (hydrogen) | distribution | block | all | p | s group | all | 1 | 15 | 16 | 17 period | all | 1 | 2 | 3 | 4 | 5 atomic mass | median | 18.998403163 u | highest | 126.90447 u (iodine) | lowest | 1.008 u (hydrogen) | distribution |
Table
hydrogen | hydrogen nitrogen | nitrogen oxygen | oxygen fluorine | fluorine chlorine | chlorine bromine | bromine iodine | iodine
Thermodynamic properties
phase at STP | all | gas | liquid | solid melting point | median | -210.1 °C | highest | 113.7 °C (iodine) | lowest | -259.14 °C (hydrogen) | distribution | boiling point | median | -182.9 °C | highest | 184.3 °C (iodine) | lowest | -252.87 °C (hydrogen) | distribution | critical temperature | median | 154.59 K | highest | 819 K (iodine) | lowest | 32.97 K (hydrogen) | distribution | critical pressure | median | 5.172 MPa | highest | 11.7 MPa (iodine) | lowest | 1.293 MPa (hydrogen) | distribution | molar heat of fusion | median | 0.558 kJ/mol | highest | 7.76 kJ/mol (iodine) | lowest | 0.222 kJ/mol (oxygen) | distribution | molar heat of vaporization | median | 3.41 kJ/mol | highest | 20.9 kJ/mol (iodine) | lowest | 0.452 kJ/mol (hydrogen) | distribution | specific heat at STP | median | 919 J/(kg K) | highest | 14300 J/(kg K) (hydrogen) | lowest | 429 J/(kg K) (iodine) adiabatic index | all | 7/5 (properties at standard conditions)
Material properties
density | median | 0.001696 g/cm^3 | highest | 4.94 g/cm^3 (iodine) | lowest | 8.99×10^-5 g/cm^3 (hydrogen) | distribution | molar volume | median | 11200 cm^3/mol | highest | 11200 cm^3/mol (hydrogen) | lowest | 25.61 cm^3/mol (bromine) bulk modulus | median | 1.9 GPa | highest | 7.7 GPa (iodine) | lowest | 1.1 GPa (chlorine) refractive index | median | 1.000284 | highest | 1.001132 (bromine) | lowest | 1.000132 (hydrogen) sound speed | median | 325.6 m/s | highest | 1270 m/s (hydrogen) | lowest | 206 m/s (chlorine) | distribution | thermal conductivity | median | 0.0277 W/(m K) | highest | 0.449 W/(m K) (iodine) | lowest | 0.0089 W/(m K) (chlorine) | distribution | (properties at standard conditions)
Electromagnetic properties
resistivity | median | 1×10^7 Ω m (ohm meters) | highest | 1×10^10 Ω m (ohm meters) (bromine) | lowest | 100 Ω m (ohm meters) (chlorine) electrical conductivity | median | 1×10^-7 S/m (siemens per meter) | highest | 0.01 S/m (siemens per meter) (chlorine) | lowest | 1×10^-10 S/m (siemens per meter) (bromine) volume magnetic susceptibility | median | -1.5×10^-8 | highest | 1.90772×10^-6 (oxygen) | lowest | -2.22×10^-5 (iodine) | distribution | mass magnetic susceptibility | median | -5.1×10^-9 m^3/kg (cubic meters per kilogram) | highest | 1.335×10^-6 m^3/kg (cubic meters per kilogram) (oxygen) | lowest | -2.48×10^-8 m^3/kg (cubic meters per kilogram) (hydrogen) molar magnetic susceptibility | median | -3.3×10^-10 m^3/mol (cubic meters per mole) | highest | 4.27184×10^-8 m^3/mol (cubic meters per mole) (oxygen) | lowest | -1.14×10^-9 m^3/mol (cubic meters per mole) (iodine)
Reactivity
valence | median | 3 | highest | 7 (iodine) | lowest | 1 (fluorine and hydrogen) | distribution | electronegativity | median | 3.04 | highest | 3.98 (fluorine) | lowest | 2.2 (hydrogen) | distribution | electron affinity | median | 295.2 kJ/mol (kilojoules per mole) | highest | 349 kJ/mol (kilojoules per mole) (chlorine) | lowest | 7 kJ/mol (kilojoules per mole) (nitrogen) | distribution | first ionization energy | median | 1312 kJ/mol (kilojoules per mole) | highest | 1681 kJ/mol (kilojoules per mole) (fluorine) | lowest | 1008.4 kJ/mol (kilojoules per mole) (iodine) | distribution |
Atomic properties
term symbol | all | ^2P_(3/2) | ^2S_(1/2) | ^3P_2 | ^4S_(3/2) atomic radius | median | 65 pm | highest | 140 pm (iodine) | lowest | 25 pm (hydrogen) | distribution | covalent radius | median | 71 pm | highest | 139 pm (iodine) | lowest | 31 pm (hydrogen) | distribution | van der Waals radius | median | 155 pm | highest | 198 pm (iodine) | lowest | 120 pm (hydrogen) | distribution | (electronic ground state properties)
Abundances
universe abundance | median | 1×10^-4 mass% | highest | 75 mass% (hydrogen) | lowest | 1×10^-7 mass% (iodine) solar abundance | median | 0.1 mass% | highest | 75 mass% (hydrogen) | lowest | 5×10^-5 mass% (fluorine) meteorite abundance | median | 0.037 mass% | highest | 40 mass% (oxygen) | lowest | 2.5×10^-5 mass% (iodine) crust abundance | median | 0.017 mass% | highest | 46 mass% (oxygen) | lowest | 4.9×10^-5 mass% (iodine) ocean abundance | median | 0.0067 mass% | highest | 86 mass% (oxygen) | lowest | 6×10^-6 mass% (iodine) human abundance | median | 0.12 mass% | highest | 61 mass% (oxygen) | lowest | 2×10^-5 mass% (iodine) universe molar abundance | median | 4×10^-6 mol% | highest | 93 mol% (hydrogen) | lowest | 1×10^-9 mol% (iodine) solar molar abundance | median | 0.009 mol% | highest | 93 mol% (hydrogen) | lowest | 3×10^-6 mol% (fluorine) meteorite molar abundance | median | 0.016 mol% | highest | 48 mol% (oxygen) | lowest | 3×10^-6 mol% (iodine) | distribution | ocean molar abundance | median | 5.2×10^-4 mol% | highest | 66 mol% (hydrogen) | lowest | 2.9×10^-7 mol% (iodine) | distribution | crust molar abundance | median | 0.0099 mol% | highest | 60 mol% (oxygen) | lowest | 8×10^-6 mol% (iodine) human molar abundance | median | 0.021 mol% | highest | 62 mol% (hydrogen) | lowest | 1×10^-6 mol% (iodine) | distribution |