group 17 elements

group 17 elements

fluorine | chlorine | bromine | iodine | astatine | tennessine (total: 6)

Periodic table location

Images

| atomic symbol | atomic number | short electronic configuration fluorine | F | 9 | [He]2s^22p^5 chlorine | Cl | 17 | [Ne]3s^23p^5 bromine | Br | 35 | [Ar]4s^23d^104p^5 iodine | I | 53 | [Kr]5s^24d^105p^5 astatine | At | 85 | [Xe]6s^24f^145d^106p^5 tennessine | Ts | 117 | [Rn]7s^25f^146d^107p^5 | Aufbau diagram | block | group fluorine | 2p 2s | p | 17 chlorine | 3p 3s | p | 17 bromine | 4p 3d 4s | p | 17 iodine | 5p 4d 5s | p | 17 astatine | 6p 5d 4f 6s | p | 17 tennessine | 7p 6d 5f 7s | p | 17 | period | atomic mass | half-life fluorine | 2 | 18.998403163 u | (stable) chlorine | 3 | 35.45 u | (stable) bromine | 4 | 79.904 u | (stable) iodine | 5 | 126.90447 u | (stable) astatine | 6 | 210 u | 8.1 h tennessine | 7 | 293 u | 50 ms

phase at STP | all | gas | liquid | solid melting point | median | -7.3 °C | highest | 302 °C (astatine) | lowest | -219.6 °C (fluorine) | distribution | boiling point | median | 12 °C | highest | 184.3 °C (iodine) | lowest | -188.12 °C (fluorine) | distribution | critical temperature | median | 502 K | highest | 819 K (iodine) | lowest | 144.13 K (fluorine) | distribution | critical pressure | median | 9.166 MPa | highest | 11.7 MPa (iodine) | lowest | 5.172 MPa (fluorine) | distribution | molar heat of fusion | median | 5.8 kJ/mol | highest | 7.76 kJ/mol (iodine) | lowest | 0.26 kJ/mol (fluorine) | distribution | molar heat of vaporization | median | 14.8 kJ/mol | highest | 40 kJ/mol (astatine) | lowest | 3.27 kJ/mol (fluorine) | distribution | specific heat at STP | median | 651 J/(kg K) | highest | 947.3 J/(kg K) (bromine) | lowest | 429 J/(kg K) (iodine) (properties at standard conditions)

density | median | 1.562 g/cm^3 | highest | 4.94 g/cm^3 (iodine) | lowest | 0.001696 g/cm^3 (fluorine) | distribution | molar volume | median | 5530 cm^3/mol | highest | 11200 cm^3/mol (fluorine) | 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 | 1.000773 | highest | 1.001132 (bromine) | lowest | 1.000195 (fluorine) thermal conductivity | median | 0.12 W/(m K) | highest | 2 W/(m K) (astatine) | lowest | 0.0089 W/(m K) (chlorine) (properties at standard conditions)

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 | -1.53×10^-5 | highest | -2.31×10^-8 (chlorine) | lowest | -2.22×10^-5 (iodine) | distribution | mass magnetic susceptibility | median | -4.9×10^-9 m^3/kg (cubic meters per kilogram) | highest | -4.5×10^-9 m^3/kg (cubic meters per kilogram) (iodine) | lowest | -7.2×10^-9 m^3/kg (cubic meters per kilogram) (chlorine) molar magnetic susceptibility | median | -7.83×10^-10 m^3/mol (cubic meters per mole) | highest | -5.11×10^-10 m^3/mol (cubic meters per mole) (chlorine) | lowest | -1.14×10^-9 m^3/mol (cubic meters per mole) (iodine) | distribution |

valence | median | 5 | highest | 7 (iodine and astatine) | lowest | 1 (fluorine) | distribution | electronegativity | median | 2.96 | highest | 3.98 (fluorine) | lowest | 2.2 (astatine) | distribution | electron affinity | median | 324.6 kJ/mol (kilojoules per mole) | highest | 349 kJ/mol (kilojoules per mole) (chlorine) | lowest | 270.1 kJ/mol (kilojoules per mole) (astatine) | distribution | first ionization energy | median | 1139.9 kJ/mol (kilojoules per mole) | highest | 1681 kJ/mol (kilojoules per mole) (fluorine) | lowest | 920 kJ/mol (kilojoules per mole) (astatine) | distribution |

term symbol | all | ^2P_(3/2) atomic radius | median | 115 pm | highest | 140 pm (iodine) | lowest | 50 pm (fluorine) | distribution | covalent radius | median | 120 pm | highest | 150 pm (astatine) | lowest | 57 pm (fluorine) | distribution | van der Waals radius | median | 180 pm | highest | 198 pm (iodine) | lowest | 147 pm (fluorine) | distribution | (electronic ground state properties)