Input interpretation
fluorine (chemical element) | astatine (chemical element) | iodine (chemical element)
Periodic table location
Periodic table location
Images
Images
Basic elemental properties
![| fluorine | astatine | iodine atomic symbol | F | At | I atomic number | 9 | 85 | 53 short electronic configuration | [He]2s^22p^5 | [Xe]6s^24f^145d^106p^5 | [Kr]5s^24d^105p^5 Aufbau diagram | 2p 2s | 6p 5d 4f 6s | 5p 4d 5s block | p | p | p group | 17 | 17 | 17 period | 2 | 6 | 5 atomic mass | 18.998403163 u | 210 u | 126.90447 u half-life | (stable) | 8.1 h | (stable)](../image_source/7ec991a6367736224410e415e3654a09.png)
| fluorine | astatine | iodine atomic symbol | F | At | I atomic number | 9 | 85 | 53 short electronic configuration | [He]2s^22p^5 | [Xe]6s^24f^145d^106p^5 | [Kr]5s^24d^105p^5 Aufbau diagram | 2p 2s | 6p 5d 4f 6s | 5p 4d 5s block | p | p | p group | 17 | 17 | 17 period | 2 | 6 | 5 atomic mass | 18.998403163 u | 210 u | 126.90447 u half-life | (stable) | 8.1 h | (stable)
Thermodynamic properties
| fluorine | astatine | iodine phase at STP | gas | solid | solid melting point | -219.6 °C | 302 °C | 113.7 °C boiling point | -188.12 °C | | 184.3 °C critical temperature | 144.13 K | | 819 K critical pressure | 5.172 MPa | | 11.7 MPa molar heat of fusion | 0.26 kJ/mol | 6 kJ/mol | 7.76 kJ/mol molar heat of vaporization | 3.27 kJ/mol | 40 kJ/mol | 20.9 kJ/mol specific heat at STP | 824 J/(kg K) | | 429 J/(kg K) adiabatic index | 7/5 | | (properties at standard conditions)
Material properties
| fluorine | astatine | iodine density | 0.001696 g/cm^3 | | 4.94 g/cm^3 molar volume | 11200 cm^3/mol | | 25.69 cm^3/mol bulk modulus | | | 7.7 GPa refractive index | 1.000195 | | thermal conductivity | 0.0277 W/(m K) | 2 W/(m K) | 0.449 W/(m K) (properties at standard conditions)
Electromagnetic properties
| fluorine | astatine | iodine electrical type | | | insulator resistivity | | | 1×10^7 Ω m (ohm meters) electrical conductivity | | | 1×10^-7 S/m (siemens per meter) magnetic type | | | diamagnetic volume magnetic susceptibility | | | -2.22×10^-5 mass magnetic susceptibility | | | -4.5×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | | | -1.14×10^-9 m^3/mol (cubic meters per mole) color | (colorless) | (silver) | (slate gray) refractive index | 1.000195 | |
Reactivity
| fluorine | astatine | iodine valence | 1 | 7 | 7 electronegativity | 3.98 | 2.2 | 2.66 electron affinity | 328 kJ/mol (kilojoules per mole) | 270.1 kJ/mol (kilojoules per mole) | 295.2 kJ/mol (kilojoules per mole) first ionization energy | 1681 kJ/mol (kilojoules per mole) | 920 kJ/mol (kilojoules per mole) | 1008.4 kJ/mol (kilojoules per mole) ionization energies | 1681 kJ/mol | 3374.2 kJ/mol | 6050.4 kJ/mol | 8407.7 kJ/mol | 11022.7 kJ/mol | 15164.1 kJ/mol | 17868 kJ/mol | 92038.1 kJ/mol | 106434.3 kJ/mol | 920 kJ/mol | 1008.4 kJ/mol | 1845.9 kJ/mol | 3180 kJ/mol
Reactivity
Atomic properties
| fluorine | astatine | iodine term symbol | ^2P_(3/2) | ^2P_(3/2) | ^2P_(3/2) atomic radius | 50 pm | 127 pm | 140 pm covalent radius | 57 pm | 150 pm | 139 pm van der Waals radius | 147 pm | | 198 pm (electronic ground state properties)
Abundances
| fluorine | astatine | iodine universe abundance | 4×10^-5 mass% | | 1×10^-7 mass% solar abundance | 5×10^-5 mass% | | meteorite abundance | 0.0087 mass% | 0 mass% | 2.5×10^-5 mass% crust abundance | 0.054 mass% | 0 mass% | 4.9×10^-5 mass% ocean abundance | 1.3×10^-4 mass% | 0 mass% | 6×10^-6 mass% human abundance | 0.0037 mass% | 0 mass% | 2×10^-5 mass% universe molar abundance | 3×10^-6 mol% | | 1×10^-9 mol% solar molar abundance | 3×10^-6 mol% | | meteorite molar abundance | 0.0097 mol% | 0 mol% | 3×10^-6 mol% ocean molar abundance | 4.2×10^-5 mol% | 0 mol% | 2.9×10^-7 mol% crust molar abundance | 0.059 mol% | 0 mol% | 8×10^-6 mol% human molar abundance | 0.0012 mol% | 0 mol% | 1×10^-6 mol%