iodine, hydrogen

iodine (chemical element) | hydrogen (chemical element)

Periodic table location

Images

| iodine | hydrogen atomic symbol | I | H atomic number | 53 | 1 short electronic configuration | [Kr]5s^24d^105p^5 | 1s^1 Aufbau diagram | 5p 4d 5s | 1s block | p | s group | 17 | 1 period | 5 | 1 atomic mass | 126.90447 u | 1.008 u half-life | (stable) | (stable)

| iodine | hydrogen phase at STP | solid | gas melting point | 113.7 °C | -259.14 °C boiling point | 184.3 °C | -252.87 °C critical temperature | 819 K | 32.97 K critical pressure | 11.7 MPa | 1.293 MPa molar heat of fusion | 7.76 kJ/mol | 0.558 kJ/mol molar heat of vaporization | 20.9 kJ/mol | 0.452 kJ/mol specific heat at STP | 429 J/(kg K) | 14300 J/(kg K) adiabatic index | | 7/5 (properties at standard conditions)

| iodine | hydrogen density | 4.94 g/cm^3 | 8.99×10^-5 g/cm^3 molar volume | 25.69 cm^3/mol | 11200 cm^3/mol bulk modulus | 7.7 GPa | refractive index | | 1.000132 sound speed | | 1270 m/s thermal conductivity | 0.449 W/(m K) | 0.1805 W/(m K) (properties at standard conditions)

| iodine | hydrogen electrical type | insulator | resistivity | 1×10^7 Ω m (ohm meters) | electrical conductivity | 1×10^-7 S/m (siemens per meter) | magnetic type | diamagnetic | diamagnetic volume magnetic susceptibility | -2.22×10^-5 | -2.23×10^-9 mass magnetic susceptibility | -4.5×10^-9 m^3/kg (cubic meters per kilogram) | -2.48×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -1.14×10^-9 m^3/mol (cubic meters per mole) | -4.999×10^-11 m^3/mol (cubic meters per mole) color | (slate gray) | (colorless) refractive index | | 1.000132

| iodine | hydrogen valence | 7 | 1 electronegativity | 2.66 | 2.2 electron affinity | 295.2 kJ/mol (kilojoules per mole) | 72.8 kJ/mol (kilojoules per mole) first ionization energy | 1008.4 kJ/mol (kilojoules per mole) | 1312 kJ/mol (kilojoules per mole) ionization energies | 1008.4 kJ/mol | 1845.9 kJ/mol | 3180 kJ/mol | 1312 kJ/mol

Reactivity

| iodine | hydrogen term symbol | ^2P_(3/2) | ^2S_(1/2) atomic radius | 140 pm | 25 pm covalent radius | 139 pm | 31 pm van der Waals radius | 198 pm | 120 pm (electronic ground state properties)

| iodine | hydrogen universe abundance | 1×10^-7 mass% | 75 mass% solar abundance | | 75 mass% meteorite abundance | 2.5×10^-5 mass% | 2.4 mass% crust abundance | 4.9×10^-5 mass% | 0.15 mass% ocean abundance | 6×10^-6 mass% | 11 mass% human abundance | 2×10^-5 mass% | 10 mass% universe molar abundance | 1×10^-9 mol% | 93 mol% solar molar abundance | | 93 mol% meteorite molar abundance | 3×10^-6 mol% | 17 mol% ocean molar abundance | 2.9×10^-7 mol% | 66 mol% crust molar abundance | 8×10^-6 mol% | 3.1 mol% human molar abundance | 1×10^-6 mol% | 62 mol%

| iodine | hydrogen half-life | (stable) | (stable) stable isotopes | I-127 (100%) | H-1 (99.985%) | H-2 (1.5×10^-4) nuclear spin | 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^- | H-1: 1/2^+ | H-2: 1^+ | H-3: 1/2^+ | H-4: 2^- | H-5: 1/2^+ | H-6: 2^- | H-7: 1/2^+ unstable isotopes | 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) | H-3 (12.32 yr) | H-6 (0.29 zs) | H-4 (0.139 zs) | H-5 (0.08 zs) | H-7 (0.023 zs) neutron cross-section | 6.2 b | 0.332 b neutron mass absorption | 0.0018 m^2/kg | 0.011 m^2/kg

| iodine | hydrogen CAS number | 7553-56-2 | 1333-74-0 PubChem CID number | 807 | 783