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rhodium vs palladium

Input interpretation

rhodium (chemical element) | palladium (chemical element)
rhodium (chemical element) | palladium (chemical element)

Periodic table location

Periodic table location
Periodic table location

Images

Images
Images

Basic elemental properties

 | rhodium | palladium atomic symbol | Rh | Pd atomic number | 45 | 46 short electronic configuration | [Kr]5s^14d^8 | [Kr]4d^10 Aufbau diagram | 4d  5s | 4d  block | d | d group | 9 | 10 period | 5 | 5 atomic mass | 102.9055 u | 106.42 u half-life | (stable) | (stable)
| rhodium | palladium atomic symbol | Rh | Pd atomic number | 45 | 46 short electronic configuration | [Kr]5s^14d^8 | [Kr]4d^10 Aufbau diagram | 4d 5s | 4d block | d | d group | 9 | 10 period | 5 | 5 atomic mass | 102.9055 u | 106.42 u half-life | (stable) | (stable)

Thermodynamic properties

 | rhodium | palladium phase at STP | solid | solid melting point | 1964 °C | 1554.9 °C boiling point | 3695 °C | 2963 °C molar heat of fusion | 21.7 kJ/mol | 16.7 kJ/mol molar heat of vaporization | 495 kJ/mol | 380 kJ/mol specific heat at STP | 240 J/(kg K) | 240 J/(kg K) (properties at standard conditions)
| rhodium | palladium phase at STP | solid | solid melting point | 1964 °C | 1554.9 °C boiling point | 3695 °C | 2963 °C molar heat of fusion | 21.7 kJ/mol | 16.7 kJ/mol molar heat of vaporization | 495 kJ/mol | 380 kJ/mol specific heat at STP | 240 J/(kg K) | 240 J/(kg K) (properties at standard conditions)

Material properties

 | rhodium | palladium density | 12.45 g/cm^3 | 12.023 g/cm^3 liquid density | 10.7 g/cm^3 | 10.38 g/cm^3 molar volume | 8.2655 cm^3/mol | 8.851 cm^3/mol Mohs hardness | 6 (≈ microcline) | 4.75 (between apatite and fluorite) Vickers hardness | 1246 MPa | 461 MPa Brinell hardness | 1100 MPa | 37.3 MPa bulk modulus | 380 GPa | 180 GPa shear modulus | 150 GPa | 44 GPa Young's modulus | 275 GPa | 121 GPa Poisson ratio | 0.26 | 0.39 ultimate tensile strength | | 180 MPa sound speed | 4700 m/s | 3070 m/s thermal expansion | 8.2×10^-6 K^(-1) | 1.18×10^-5 K^(-1) thermal conductivity | 150 W/(m K) | 72 W/(m K) (properties at standard conditions)
| rhodium | palladium density | 12.45 g/cm^3 | 12.023 g/cm^3 liquid density | 10.7 g/cm^3 | 10.38 g/cm^3 molar volume | 8.2655 cm^3/mol | 8.851 cm^3/mol Mohs hardness | 6 (≈ microcline) | 4.75 (between apatite and fluorite) Vickers hardness | 1246 MPa | 461 MPa Brinell hardness | 1100 MPa | 37.3 MPa bulk modulus | 380 GPa | 180 GPa shear modulus | 150 GPa | 44 GPa Young's modulus | 275 GPa | 121 GPa Poisson ratio | 0.26 | 0.39 ultimate tensile strength | | 180 MPa sound speed | 4700 m/s | 3070 m/s thermal expansion | 8.2×10^-6 K^(-1) | 1.18×10^-5 K^(-1) thermal conductivity | 150 W/(m K) | 72 W/(m K) (properties at standard conditions)

Electromagnetic properties

 | rhodium | palladium electrical type | conductor | conductor 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 | paramagnetic | paramagnetic volume magnetic susceptibility | 1.693×10^-4 | 7.899×10^-4 mass magnetic susceptibility | 1.36×10^-8 m^3/kg (cubic meters per kilogram) | 6.57×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 1.4×10^-9 m^3/mol (cubic meters per mole) | 6.992×10^-9 m^3/mol (cubic meters per mole) work function | 4.98 eV (Polycrystalline) | (5.22 to 5.6) eV threshold frequency | 1.204×10^15 Hz (hertz) | (1.262×10^15 to 1.354×10^15) Hz (hertz) color | (silver) | (silver)
| rhodium | palladium electrical type | conductor | conductor 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 | paramagnetic | paramagnetic volume magnetic susceptibility | 1.693×10^-4 | 7.899×10^-4 mass magnetic susceptibility | 1.36×10^-8 m^3/kg (cubic meters per kilogram) | 6.57×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 1.4×10^-9 m^3/mol (cubic meters per mole) | 6.992×10^-9 m^3/mol (cubic meters per mole) work function | 4.98 eV (Polycrystalline) | (5.22 to 5.6) eV threshold frequency | 1.204×10^15 Hz (hertz) | (1.262×10^15 to 1.354×10^15) Hz (hertz) color | (silver) | (silver)

Reactivity

 | rhodium | palladium valence | 6 | 4 electronegativity | 2.28 | 2.2 electron affinity | 109.7 kJ/mol (kilojoules per mole) | 53.7 kJ/mol (kilojoules per mole) first ionization energy | 719.7 kJ/mol (kilojoules per mole) | 804.4 kJ/mol (kilojoules per mole) ionization energies | 719.7 kJ/mol | 1740 kJ/mol | 2997 kJ/mol | 804.4 kJ/mol | 1870 kJ/mol | 3177 kJ/mol
| rhodium | palladium valence | 6 | 4 electronegativity | 2.28 | 2.2 electron affinity | 109.7 kJ/mol (kilojoules per mole) | 53.7 kJ/mol (kilojoules per mole) first ionization energy | 719.7 kJ/mol (kilojoules per mole) | 804.4 kJ/mol (kilojoules per mole) ionization energies | 719.7 kJ/mol | 1740 kJ/mol | 2997 kJ/mol | 804.4 kJ/mol | 1870 kJ/mol | 3177 kJ/mol
Reactivity
Reactivity

Atomic properties

 | rhodium | palladium term symbol | ^4F_(9/2) | ^1S_0 atomic radius | 135 pm | 140 pm covalent radius | 142 pm | 139 pm van der Waals radius | | 163 pm (electronic ground state properties)
| rhodium | palladium term symbol | ^4F_(9/2) | ^1S_0 atomic radius | 135 pm | 140 pm covalent radius | 142 pm | 139 pm van der Waals radius | | 163 pm (electronic ground state properties)

Abundances

 | rhodium | palladium universe abundance | 6×10^-8 mass% | 2×10^-7 mass% solar abundance | 2×10^-7 mass% | 3×10^-7 mass% meteorite abundance | 1.8×10^-5 mass% | 6.6×10^-5 mass% crust abundance | 7×10^-8 mass% | 6.3×10^-7 mass% universe molar abundance | 7×10^-10 mol% | 2×10^-9 mol% solar molar abundance | 2×10^-9 mol% | 4×10^-9 mol% meteorite molar abundance | 4×10^-6 mol% | 1.3×10^-5 mol% crust molar abundance | 9.9×10^-9 mol% | 9.9×10^-8 mol%
| rhodium | palladium universe abundance | 6×10^-8 mass% | 2×10^-7 mass% solar abundance | 2×10^-7 mass% | 3×10^-7 mass% meteorite abundance | 1.8×10^-5 mass% | 6.6×10^-5 mass% crust abundance | 7×10^-8 mass% | 6.3×10^-7 mass% universe molar abundance | 7×10^-10 mol% | 2×10^-9 mol% solar molar abundance | 2×10^-9 mol% | 4×10^-9 mol% meteorite molar abundance | 4×10^-6 mol% | 1.3×10^-5 mol% crust molar abundance | 9.9×10^-9 mol% | 9.9×10^-8 mol%