carbon vs hydrogen vs iodine vs bromine

carbon (chemical element) | hydrogen (chemical element) | iodine (chemical element) | bromine (chemical element)

Periodic table location

Images

| atomic symbol | atomic number | short electronic configuration carbon | C | 6 | [He]2s^22p^2 hydrogen | H | 1 | 1s^1 iodine | I | 53 | [Kr]5s^24d^105p^5 bromine | Br | 35 | [Ar]4s^23d^104p^5 | Aufbau diagram | block | group carbon | 2p 2s | p | 14 hydrogen | 1s | s | 1 iodine | 5p 4d 5s | p | 17 bromine | 4p 3d 4s | p | 17 | period | atomic mass | half-life carbon | 2 | 12.011 u | (stable) hydrogen | 1 | 1.008 u | (stable) iodine | 5 | 126.90447 u | (stable) bromine | 4 | 79.904 u | (stable)

phase at STP | all | gas | liquid | solid melting point | median | 53.2 °C | highest | 3550 °C (carbon) | lowest | -259.14 °C (hydrogen) | distribution | boiling point | median | 122 °C | highest | 4027 °C (carbon) | lowest | -252.87 °C (hydrogen) | distribution | critical temperature | median | 588 K | highest | 819 K (iodine) | lowest | 32.97 K (hydrogen) | distribution | critical pressure | median | 10.34 MPa | highest | 11.7 MPa (iodine) | lowest | 1.293 MPa (hydrogen) molar heat of fusion | median | 6.8 kJ/mol | highest | 105 kJ/mol (carbon) | lowest | 0.558 kJ/mol (hydrogen) molar heat of vaporization | median | 17.9 kJ/mol | highest | 715 kJ/mol (carbon) | lowest | 0.452 kJ/mol (hydrogen) specific heat at STP | median | 829 J/(kg K) | highest | 14300 J/(kg K) (hydrogen) | lowest | 429 J/(kg K) (iodine) (properties at standard conditions)

density | median | 2.69 g/cm^3 | highest | 4.94 g/cm^3 (iodine) | lowest | 8.99×10^-5 g/cm^3 (hydrogen) | distribution | molar volume | median | 25.65 cm^3/mol | highest | 11200 cm^3/mol (hydrogen) | lowest | 5.315 cm^3/mol (carbon) bulk modulus | median | 7.7 GPa | highest | 33 GPa (carbon) | lowest | 1.9 GPa (bromine) refractive index | median | 1.001132 | highest | 2.417 (carbon) | lowest | 1.000132 (hydrogen) thermal conductivity | median | 0.315 W/(m K) | highest | 140 W/(m K) (carbon) | lowest | 0.12 W/(m K) (bromine) (properties at standard conditions)

resistivity | median | 1×10^7 Ω m (ohm meters) | highest | 1×10^10 Ω m (ohm meters) (bromine) | lowest | 1×10^-5 Ω m (ohm meters) (carbon) electrical conductivity | median | 1×10^-7 S/m (siemens per meter) | highest | 100000 S/m (siemens per meter) (carbon) | lowest | 1×10^-10 S/m (siemens per meter) (bromine) volume magnetic susceptibility | median | -1.47×10^-5 | highest | -2.23×10^-9 (hydrogen) | lowest | -2.22×10^-5 (iodine) | distribution | mass magnetic susceptibility | median | -5.55×10^-9 m^3/kg (cubic meters per kilogram) | highest | -4.5×10^-9 m^3/kg (cubic meters per kilogram) (iodine) | lowest | -2.48×10^-8 m^3/kg (cubic meters per kilogram) (hydrogen) | distribution | molar magnetic susceptibility | median | -4.29×10^-10 m^3/mol (cubic meters per mole) | highest | -4.999×10^-11 m^3/mol (cubic meters per mole) (hydrogen) | lowest | -1.14×10^-9 m^3/mol (cubic meters per mole) (iodine) | distribution | work function | all | 5 eV

valence | median | 4.5 | highest | 7 (iodine) | lowest | 1 (hydrogen) | distribution | electronegativity | median | 2.61 | highest | 2.96 (bromine) | lowest | 2.2 (hydrogen) | distribution | electron affinity | median | 224.5 kJ/mol (kilojoules per mole) | highest | 324.6 kJ/mol (kilojoules per mole) (bromine) | lowest | 72.8 kJ/mol (kilojoules per mole) (hydrogen) | distribution | first ionization energy | median | 1113.2 kJ/mol (kilojoules per mole) | highest | 1312 kJ/mol (kilojoules per mole) (hydrogen) | lowest | 1008.4 kJ/mol (kilojoules per mole) (iodine) | distribution |

term symbol | all | ^2P_(3/2) | ^2S_(1/2) | ^3P_0 atomic radius | median | 93 pm | highest | 140 pm (iodine) | lowest | 25 pm (hydrogen) | distribution | covalent radius | median | 98 pm | highest | 139 pm (iodine) | lowest | 31 pm (hydrogen) | distribution | van der Waals radius | median | 178 pm | highest | 198 pm (iodine) | lowest | 120 pm (hydrogen) | distribution | (electronic ground state properties)

universe abundance | median | 0.25 mass% | highest | 75 mass% (hydrogen) | lowest | 1×10^-7 mass% (iodine) meteorite abundance | median | 0.75 mass% | highest | 2.4 mass% (hydrogen) | lowest | 2.5×10^-5 mass% (iodine) | distribution | crust abundance | median | 0.075 mass% | highest | 0.18 mass% (carbon) | lowest | 4.9×10^-5 mass% (iodine) ocean abundance | median | 0.0048 mass% | highest | 11 mass% (hydrogen) | lowest | 6×10^-6 mass% (iodine) human abundance | median | 5 mass% | highest | 23 mass% (carbon) | lowest | 2×10^-5 mass% (iodine) | distribution | universe molar abundance | median | 0.025 mol% | highest | 93 mol% (hydrogen) | lowest | 1×10^-9 mol% (iodine) meteorite molar abundance | median | 0.9 mol% | highest | 17 mol% (hydrogen) | lowest | 3×10^-6 mol% (iodine) ocean molar abundance | median | 9.6×10^-4 mol% | highest | 66 mol% (hydrogen) | lowest | 2.9×10^-7 mol% (iodine) crust molar abundance | median | 0.16 mol% | highest | 3.1 mol% (hydrogen) | lowest | 8×10^-6 mol% (iodine) human molar abundance | median | 6 mol% | highest | 62 mol% (hydrogen) | lowest | 1×10^-6 mol% (iodine)