Input interpretation
bromine (chemical element) | iodine (chemical element)
Periodic table location
Periodic table location
Images
Images
Basic elemental properties
![| 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)](../image_source/52fb0818b87802290cbea9766e3c1912.png)
| 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)
Thermodynamic properties
| 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)
Material properties
| 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)
Electromagnetic properties
| 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 |
Reactivity
| 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
Atomic properties
| 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)
Abundances
| 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%