F, I

fluorine (chemical element) | iodine (chemical element)

Periodic table location

Images

| fluorine | iodine atomic symbol | F | I atomic number | 9 | 53 short electronic configuration | [He]2s^22p^5 | [Kr]5s^24d^105p^5 Aufbau diagram | 2p 2s | 5p 4d 5s block | p | p group | 17 | 17 period | 2 | 5 atomic mass | 18.998403163 u | 126.90447 u half-life | (stable) | (stable)

| fluorine | iodine phase at STP | gas | solid melting point | -219.6 °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 | 7.76 kJ/mol molar heat of vaporization | 3.27 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)

| fluorine | 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) | 0.449 W/(m K) (properties at standard conditions)

| fluorine | 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) | (slate gray) refractive index | 1.000195 |

| fluorine | iodine valence | 1 | 7 electronegativity | 3.98 | 2.66 electron affinity | 328 kJ/mol (kilojoules per mole) | 295.2 kJ/mol (kilojoules per mole) first ionization energy | 1681 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 | 1008.4 kJ/mol | 1845.9 kJ/mol | 3180 kJ/mol

Reactivity

| fluorine | iodine term symbol | ^2P_(3/2) | ^2P_(3/2) atomic radius | 50 pm | 140 pm covalent radius | 57 pm | 139 pm van der Waals radius | 147 pm | 198 pm (electronic ground state properties)

| fluorine | iodine universe abundance | 4×10^-5 mass% | 1×10^-7 mass% solar abundance | 5×10^-5 mass% | meteorite abundance | 0.0087 mass% | 2.5×10^-5 mass% crust abundance | 0.054 mass% | 4.9×10^-5 mass% ocean abundance | 1.3×10^-4 mass% | 6×10^-6 mass% human abundance | 0.0037 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% | 3×10^-6 mol% ocean molar abundance | 4.2×10^-5 mol% | 2.9×10^-7 mol% crust molar abundance | 0.059 mol% | 8×10^-6 mol% human molar abundance | 0.0012 mol% | 1×10^-6 mol%

| fluorine | iodine half-life | (stable) | (stable) stable isotopes | F-19 (100%) | I-127 (100%) nuclear spin | F-14: 2^- | F-15: 1/2^+ | F-16: 0^- | F-17: 5/2^+ | F-18: 1^+ | F-19: 1/2^+ | F-20: 2^+ | F-21: 5/2^+ | F-22: 4^+ | F-23: 5/2^+ | F-25: 5/2^+ | F-26: 1^+ | F-27: 5/2^+ | F-29: 5/2^+ | F-31: 5/2^+ | I-108: 1^+ | I-109: 1/2^+ | I-110: 1^+ | I-111: 5/2^+ | I-112: 1^+ | I-113: 5/2^+ | I-114: 1^+ | I-115: 5/2^+ | I-116: 1^+ | I-117: 5/2^+ | I-118: 2^- | I-119: 5/2^+ | I-120: 2^- | I-121: 5/2^+ | I-122: 1^+ | I-123: 5/2^+ | I-124: 2^- | I-125: 5/2^+ | I-126: 2^- | I-127: 5/2^+ | I-128: 1^+ | I-129: 7/2^+ | I-130: 5^+ | I-131: 7/2^+ | I-132: 4^+ | I-133: 7/2^+ | I-134: 4^+ | I-135: 7/2^+ | I-136: 1^- | I-137: 7/2^+ | I-138: 2^- | I-139: 7/2^+ | I-140: 4^- | I-141: 7/2^+ | I-142: 2^- | I-143: 7/2^+ | I-144: 1^- unstable isotopes | F-18 (109.771 min) | F-17 (64.49 s) | F-20 (11.07 s) | F-22 (4.23 s) | F-21 (4.158 s) | F-23 (2.23 s) | F-24 (390 ms) | F-25 (50 ms) | F-26 (9.6 ms) | F-27 (5 ms) | F-29 (2.5 ms) | F-30 (260 ns) | F-31 (250 ns) | F-28 (40 ns) | F-16 (11 zs) | F-15 (0.46 zs) | I-129 (15.7 Myr) | I-125 (59.4 days) | I-126 (12.93 days) | I-131 (8.0252 days) | I-124 (100.2 h) | I-133 (20.8 h) | I-123 (13.2235 h) | I-130 (12.4 h) | I-135 (6.58 h) | I-132 (137.7 min) | I-121 (127.2 min) | I-120 (82 min) | I-134 (52.5 min) | I-128 (24.98 min) | I-119 (19.1 min) | I-118 (13.7 min) | I-122 (218 s) | I-117 (133 s) | I-136 (83.4 s) | I-115 (78 s) | I-137 (24.5 s) | I-113 (6.6 s) | I-138 (6.23 s) | I-112 (3.42 s) | I-116 (2.91 s) | I-111 (2.5 s) | I-139 (2.28 s) | I-114 (2.1 s) | I-140 (860 ms) | I-110 (650 ms) | I-141 (430 ms) | I-142 (200 ms) | I-108 (36 ms) | I-109 (103 µs) | I-144 (300 ns) | I-143 (150 ns) neutron cross-section | 0.0096 b | 6.2 b neutron mass absorption | 2×10^-5 m^2/kg | 0.0018 m^2/kg

| fluorine | iodine CAS number | 7782-41-4 | 7553-56-2 PubChem CID number | 24524 | 807 Gmelin number | 16281 |