Input interpretation
hydrogen (chemical element) | rhodium (chemical element) | iodine (chemical element)
Periodic table location
Periodic table location
Images
Images
Basic elemental properties
| hydrogen | rhodium | iodine atomic symbol | H | Rh | I atomic number | 1 | 45 | 53 short electronic configuration | 1s^1 | [Kr]5s^14d^8 | [Kr]5s^24d^105p^5 Aufbau diagram | 1s | 4d 5s | 5p 4d 5s block | s | d | p group | 1 | 9 | 17 period | 1 | 5 | 5 atomic mass | 1.008 u | 102.9055 u | 126.90447 u half-life | (stable) | (stable) | (stable)
Thermodynamic properties
| hydrogen | rhodium | iodine phase at STP | gas | solid | solid melting point | -259.14 °C | 1964 °C | 113.7 °C boiling point | -252.87 °C | 3695 °C | 184.3 °C critical temperature | 32.97 K | | 819 K critical pressure | 1.293 MPa | | 11.7 MPa molar heat of fusion | 0.558 kJ/mol | 21.7 kJ/mol | 7.76 kJ/mol molar heat of vaporization | 0.452 kJ/mol | 495 kJ/mol | 20.9 kJ/mol specific heat at STP | 14300 J/(kg K) | 240 J/(kg K) | 429 J/(kg K) adiabatic index | 7/5 | | (properties at standard conditions)
Material properties
| hydrogen | rhodium | iodine density | 8.99×10^-5 g/cm^3 | 12.45 g/cm^3 | 4.94 g/cm^3 liquid density | | 10.7 g/cm^3 | molar volume | 11200 cm^3/mol | 8.2655 cm^3/mol | 25.69 cm^3/mol Mohs hardness | | 6 (≈ microcline) | Vickers hardness | | 1246 MPa | Brinell hardness | | 1100 MPa | bulk modulus | | 380 GPa | 7.7 GPa shear modulus | | 150 GPa | Young's modulus | | 275 GPa | Poisson ratio | | 0.26 | refractive index | 1.000132 | | sound speed | 1270 m/s | 4700 m/s | thermal expansion | | 8.2×10^-6 K^(-1) | thermal conductivity | 0.1805 W/(m K) | 150 W/(m K) | 0.449 W/(m K) (properties at standard conditions)
Electromagnetic properties
| hydrogen | rhodium | iodine electrical type | | conductor | insulator resistivity | | 4.3×10^-8 Ω m (ohm meters) | 1×10^7 Ω m (ohm meters) electrical conductivity | | 2.3×10^7 S/m (siemens per meter) | 1×10^-7 S/m (siemens per meter) magnetic type | diamagnetic | paramagnetic | diamagnetic volume magnetic susceptibility | -2.23×10^-9 | 1.693×10^-4 | -2.22×10^-5 mass magnetic susceptibility | -2.48×10^-8 m^3/kg (cubic meters per kilogram) | 1.36×10^-8 m^3/kg (cubic meters per kilogram) | -4.5×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -4.999×10^-11 m^3/mol (cubic meters per mole) | 1.4×10^-9 m^3/mol (cubic meters per mole) | -1.14×10^-9 m^3/mol (cubic meters per mole) work function | | 4.98 eV (Polycrystalline) | threshold frequency | | 1.204×10^15 Hz (hertz) | color | (colorless) | (silver) | (slate gray) refractive index | 1.000132 | |
Reactivity
| hydrogen | rhodium | iodine valence | 1 | 6 | 7 electronegativity | 2.2 | 2.28 | 2.66 electron affinity | 72.8 kJ/mol (kilojoules per mole) | 109.7 kJ/mol (kilojoules per mole) | 295.2 kJ/mol (kilojoules per mole) first ionization energy | 1312 kJ/mol (kilojoules per mole) | 719.7 kJ/mol (kilojoules per mole) | 1008.4 kJ/mol (kilojoules per mole) ionization energies | 1312 kJ/mol | 719.7 kJ/mol | 1740 kJ/mol | 2997 kJ/mol | 1008.4 kJ/mol | 1845.9 kJ/mol | 3180 kJ/mol
Reactivity
Atomic properties
| hydrogen | rhodium | iodine term symbol | ^2S_(1/2) | ^4F_(9/2) | ^2P_(3/2) atomic radius | 25 pm | 135 pm | 140 pm covalent radius | 31 pm | 142 pm | 139 pm van der Waals radius | 120 pm | | 198 pm (electronic ground state properties)
Abundances
| hydrogen | rhodium | iodine universe abundance | 75 mass% | 6×10^-8 mass% | 1×10^-7 mass% solar abundance | 75 mass% | 2×10^-7 mass% | meteorite abundance | 2.4 mass% | 1.8×10^-5 mass% | 2.5×10^-5 mass% crust abundance | 0.15 mass% | 7×10^-8 mass% | 4.9×10^-5 mass% ocean abundance | 11 mass% | | 6×10^-6 mass% human abundance | 10 mass% | | 2×10^-5 mass% universe molar abundance | 93 mol% | 7×10^-10 mol% | 1×10^-9 mol% solar molar abundance | 93 mol% | 2×10^-9 mol% | meteorite molar abundance | 17 mol% | 4×10^-6 mol% | 3×10^-6 mol% ocean molar abundance | 66 mol% | | 2.9×10^-7 mol% crust molar abundance | 3.1 mol% | 9.9×10^-9 mol% | 8×10^-6 mol% human molar abundance | 62 mol% | | 1×10^-6 mol%