bromine, iodine

bromine (chemical element) | iodine (chemical element)

Periodic table location

Images

| bromine | iodine atomic symbol | Br | I atomic number | 35 | 53 short electronic configuration | [Ar]4s^23d^104p^5 | [Kr]5s^24d^105p^5 Aufbau diagram | 4p 3d 4s | 5p 4d 5s block | p | p group | 17 | 17 period | 4 | 5 atomic mass | 79.904 u | 126.90447 u half-life | (stable) | (stable)

| bromine | iodine phase at STP | liquid | solid melting point | -7.3 °C | 113.7 °C boiling point | 59 °C | 184.3 °C critical temperature | 588 K | 819 K critical pressure | 10.34 MPa | 11.7 MPa molar heat of fusion | 5.8 kJ/mol | 7.76 kJ/mol molar heat of vaporization | 14.8 kJ/mol | 20.9 kJ/mol specific heat at STP | 947.3 J/(kg K) | 429 J/(kg K) (properties at standard conditions)

| bromine | iodine density | 3.12 g/cm^3 | 4.94 g/cm^3 liquid density | 3.12 g/cm^3 | molar volume | 25.61 cm^3/mol | 25.69 cm^3/mol bulk modulus | 1.9 GPa | 7.7 GPa refractive index | 1.001132 | thermal conductivity | 0.12 W/(m K) | 0.449 W/(m K) (properties at standard conditions)

| bromine | iodine electrical type | insulator | insulator resistivity | 1×10^10 Ω m (ohm meters) | 1×10^7 Ω m (ohm meters) electrical conductivity | 1×10^-10 S/m (siemens per meter) | 1×10^-7 S/m (siemens per meter) magnetic type | diamagnetic | diamagnetic volume magnetic susceptibility | -1.53×10^-5 | -2.22×10^-5 mass magnetic susceptibility | -4.9×10^-9 m^3/kg (cubic meters per kilogram) | -4.5×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -7.83×10^-10 m^3/mol (cubic meters per mole) | -1.14×10^-9 m^3/mol (cubic meters per mole) color | (red) | (slate gray) refractive index | 1.001132 |

| bromine | iodine valence | 5 | 7 electronegativity | 2.96 | 2.66 electron affinity | 324.6 kJ/mol (kilojoules per mole) | 295.2 kJ/mol (kilojoules per mole) first ionization energy | 1139.9 kJ/mol (kilojoules per mole) | 1008.4 kJ/mol (kilojoules per mole) ionization energies | 1139.9 kJ/mol | 2103 kJ/mol | 3470 kJ/mol | 4560 kJ/mol | 5760 kJ/mol | 8550 kJ/mol | 9940 kJ/mol | 18600 kJ/mol | 1008.4 kJ/mol | 1845.9 kJ/mol | 3180 kJ/mol

Reactivity

| bromine | iodine term symbol | ^2P_(3/2) | ^2P_(3/2) atomic radius | 115 pm | 140 pm covalent radius | 120 pm | 139 pm van der Waals radius | 185 pm | 198 pm (electronic ground state properties)

| bromine | iodine universe abundance | 7×10^-7 mass% | 1×10^-7 mass% meteorite abundance | 1.2×10^-4 mass% | 2.5×10^-5 mass% crust abundance | 3×10^-4 mass% | 4.9×10^-5 mass% ocean abundance | 0.0067 mass% | 6×10^-6 mass% human abundance | 2.9×10^-4 mass% | 2×10^-5 mass% universe molar abundance | 1×10^-8 mol% | 1×10^-9 mol% meteorite molar abundance | 2.3×10^-5 mol% | 3×10^-6 mol% ocean molar abundance | 5.2×10^-4 mol% | 2.9×10^-7 mol% crust molar abundance | 7.8×10^-5 mol% | 8×10^-6 mol% human molar abundance | 2.3×10^-5 mol% | 1×10^-6 mol%

| bromine | iodine half-life | (stable) | (stable) stable isotopes | Br-79 (50.69%) | Br-81 (49.31%) | I-127 (100%) nuclear spin | Br-67: 1/2^- | Br-68: 3^+ | Br-69: 1/2^- | Br-70: 0^+ | Br-71: 5/2^- | Br-72: 1^+ | Br-73: 1/2^- | Br-74: 0^- | Br-75: 3/2^- | Br-76: 1^- | Br-77: 3/2^- | Br-78: 1^+ | Br-79: 3/2^- | Br-80: 1^+ | Br-81: 3/2^- | Br-82: 5^- | Br-83: 3/2^- | Br-84: 2^- | Br-85: 3/2^- | Br-86: 2^- | Br-87: 3/2^- | Br-88: 2^- | Br-91: 3/2^- | Br-92: 2^- | Br-93: 5/2^- | Br-95: 3/2^- | Br-97: 3/2^- | 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 | Br-77 (57.0361 h) | Br-82 (35.2833 h) | Br-76 (16.2 h) | Br-83 (140 min) | Br-75 (97 min) | Br-84 (31.8 min) | Br-74 (25.4 min) | Br-80 (17.68 min) | Br-78 (6.47 min) | Br-73 (200 s) | Br-85 (174 s) | Br-72 (78.6 s) | Br-87 (55.65 s) | Br-86 (55.1 s) | Br-71 (21.4 s) | Br-88 (16.29 s) | Br-89 (4.4 s) | Br-90 (1.91 s) | Br-91 (541 ms) | Br-92 (343 ms) | Br-93 (102 ms) | Br-70 (79.1 ms) | Br-94 (70 ms) | Br-68 (1.2 µs) | Br-97 (150 ns) | Br-96 (150 ns) | Br-95 (150 ns) | Br-69 (24 ns) | 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 | 6.8 b | 6.2 b neutron mass absorption | 0.002 m^2/kg | 0.0018 m^2/kg

| bromine | iodine CAS number | 7726-95-6 | 7553-56-2 PubChem CID number | 24408 | 807