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lead vs iridium

Input interpretation

lead (chemical element) | iridium (chemical element)
lead (chemical element) | iridium (chemical element)

Periodic table location

Periodic table location
Periodic table location

Images

Images
Images

Basic elemental properties

| lead | iridium atomic symbol | Pb | Ir atomic number | 82 | 77 short electronic configuration | [Xe]6s^24f^145d^106p^2 | [Xe]6s^24f^145d^7 Aufbau diagram | 6p 5d 4f 6s | 5d 4f 6s block | p | d group | 14 | 9 period | 6 | 6 atomic mass | 207.2 u | 192.217 u half-life | (stable) | (stable)
| lead | iridium atomic symbol | Pb | Ir atomic number | 82 | 77 short electronic configuration | [Xe]6s^24f^145d^106p^2 | [Xe]6s^24f^145d^7 Aufbau diagram | 6p 5d 4f 6s | 5d 4f 6s block | p | d group | 14 | 9 period | 6 | 6 atomic mass | 207.2 u | 192.217 u half-life | (stable) | (stable)

Thermodynamic properties

| lead | iridium phase at STP | solid | solid melting point | 327.46 °C | 2466 °C boiling point | 1749 °C | 4428 °C molar heat of fusion | 4.77 kJ/mol | 26 kJ/mol molar heat of vaporization | 178 kJ/mol | 560 kJ/mol specific heat at STP | 127 J/(kg K) | 131 J/(kg K) (properties at standard conditions)
| lead | iridium phase at STP | solid | solid melting point | 327.46 °C | 2466 °C boiling point | 1749 °C | 4428 °C molar heat of fusion | 4.77 kJ/mol | 26 kJ/mol molar heat of vaporization | 178 kJ/mol | 560 kJ/mol specific heat at STP | 127 J/(kg K) | 131 J/(kg K) (properties at standard conditions)

Material properties

| lead | iridium density | 11.34 g/cm^3 | 22.56 g/cm^3 liquid density | 10.66 g/cm^3 | 19 g/cm^3 molar volume | 18.27 cm^3/mol | 8.52 cm^3/mol Mohs hardness | 1.5 (between talc and gypsum) | 6.5 (between microcline and quartz) Vickers hardness | | 1760 MPa Brinell hardness | 38.3 MPa | 1670 MPa bulk modulus | 46 GPa | 320 GPa shear modulus | 5.6 GPa | 210 GPa Young's modulus | 16 GPa | 528 GPa Poisson ratio | 0.44 | 0.26 ultimate tensile strength | 18 MPa | sound speed | 1260 m/s | 4825 m/s thermal expansion | 2.89×10^-5 K^(-1) | 6.4×10^-6 K^(-1) thermal conductivity | 35 W/(m K) | 150 W/(m K) (properties at standard conditions)
| lead | iridium density | 11.34 g/cm^3 | 22.56 g/cm^3 liquid density | 10.66 g/cm^3 | 19 g/cm^3 molar volume | 18.27 cm^3/mol | 8.52 cm^3/mol Mohs hardness | 1.5 (between talc and gypsum) | 6.5 (between microcline and quartz) Vickers hardness | | 1760 MPa Brinell hardness | 38.3 MPa | 1670 MPa bulk modulus | 46 GPa | 320 GPa shear modulus | 5.6 GPa | 210 GPa Young's modulus | 16 GPa | 528 GPa Poisson ratio | 0.44 | 0.26 ultimate tensile strength | 18 MPa | sound speed | 1260 m/s | 4825 m/s thermal expansion | 2.89×10^-5 K^(-1) | 6.4×10^-6 K^(-1) thermal conductivity | 35 W/(m K) | 150 W/(m K) (properties at standard conditions)

Electromagnetic properties

| lead | iridium electrical type | conductor | conductor resistivity | 2.1×10^-7 Ω m (ohm meters) | 4.7×10^-8 Ω m (ohm meters) electrical conductivity | 4.8×10^6 S/m (siemens per meter) | 2.1×10^7 S/m (siemens per meter) magnetic type | diamagnetic | paramagnetic volume magnetic susceptibility | -1.7×10^-5 | 3.77×10^-5 mass magnetic susceptibility | -1.5×10^-9 m^3/kg (cubic meters per kilogram) | 1.67×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -3.11×10^-10 m^3/mol (cubic meters per mole) | 3.21×10^-10 m^3/mol (cubic meters per mole) work function | 4.25 eV (Polycrystalline) | (5 to 5.76) eV threshold frequency | 1.028×10^15 Hz (hertz) | (1.209×10^15 to 1.393×10^15) Hz (hertz) superconducting point | 7.2 K (kelvins) | 0.11 K (kelvins) color | (slate gray) | (silver)
| lead | iridium electrical type | conductor | conductor resistivity | 2.1×10^-7 Ω m (ohm meters) | 4.7×10^-8 Ω m (ohm meters) electrical conductivity | 4.8×10^6 S/m (siemens per meter) | 2.1×10^7 S/m (siemens per meter) magnetic type | diamagnetic | paramagnetic volume magnetic susceptibility | -1.7×10^-5 | 3.77×10^-5 mass magnetic susceptibility | -1.5×10^-9 m^3/kg (cubic meters per kilogram) | 1.67×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -3.11×10^-10 m^3/mol (cubic meters per mole) | 3.21×10^-10 m^3/mol (cubic meters per mole) work function | 4.25 eV (Polycrystalline) | (5 to 5.76) eV threshold frequency | 1.028×10^15 Hz (hertz) | (1.209×10^15 to 1.393×10^15) Hz (hertz) superconducting point | 7.2 K (kelvins) | 0.11 K (kelvins) color | (slate gray) | (silver)

Reactivity

| lead | iridium valence | 4 | 6 electronegativity | 2.33 | 2.2 electron affinity | 35.1 kJ/mol (kilojoules per mole) | 151 kJ/mol (kilojoules per mole) first ionization energy | 715.6 kJ/mol (kilojoules per mole) | 880 kJ/mol (kilojoules per mole) ionization energies | 715.6 kJ/mol | 1450.5 kJ/mol | 3081.5 kJ/mol | 4083 kJ/mol | 6640 kJ/mol | 880 kJ/mol | 1600 kJ/mol
| lead | iridium valence | 4 | 6 electronegativity | 2.33 | 2.2 electron affinity | 35.1 kJ/mol (kilojoules per mole) | 151 kJ/mol (kilojoules per mole) first ionization energy | 715.6 kJ/mol (kilojoules per mole) | 880 kJ/mol (kilojoules per mole) ionization energies | 715.6 kJ/mol | 1450.5 kJ/mol | 3081.5 kJ/mol | 4083 kJ/mol | 6640 kJ/mol | 880 kJ/mol | 1600 kJ/mol
Reactivity
Reactivity

Atomic properties

| lead | iridium term symbol | ^3P_0 | ^4F_(9/2) atomic radius | 180 pm | 135 pm covalent radius | 146 pm | 141 pm van der Waals radius | 202 pm | (electronic ground state properties)
| lead | iridium term symbol | ^3P_0 | ^4F_(9/2) atomic radius | 180 pm | 135 pm covalent radius | 146 pm | 141 pm van der Waals radius | 202 pm | (electronic ground state properties)

Abundances

| lead | iridium universe abundance | 1×10^-6 mass% | 2×10^-7 mass% solar abundance | 1×10^-6 mass% | 2×10^-7 mass% meteorite abundance | 1.4×10^-4 mass% | 5.4×10^-5 mass% crust abundance | 9.9×10^-4 mass% | 4×10^-8 mass% ocean abundance | 3×10^-9 mass% | human abundance | 1.7×10^-4 mass% | universe molar abundance | 6×10^-9 mol% | 1×10^-9 mol% solar molar abundance | 7×10^-9 mol% | 9.9×10^-10 mol% meteorite molar abundance | 1×10^-5 mol% | 6×10^-6 mol% ocean molar abundance | 9×10^-11 mol% | crust molar abundance | 9.9×10^-5 mol% | 5×10^-9 mol% human molar abundance | 5×10^-6 mol% |
| lead | iridium universe abundance | 1×10^-6 mass% | 2×10^-7 mass% solar abundance | 1×10^-6 mass% | 2×10^-7 mass% meteorite abundance | 1.4×10^-4 mass% | 5.4×10^-5 mass% crust abundance | 9.9×10^-4 mass% | 4×10^-8 mass% ocean abundance | 3×10^-9 mass% | human abundance | 1.7×10^-4 mass% | universe molar abundance | 6×10^-9 mol% | 1×10^-9 mol% solar molar abundance | 7×10^-9 mol% | 9.9×10^-10 mol% meteorite molar abundance | 1×10^-5 mol% | 6×10^-6 mol% ocean molar abundance | 9×10^-11 mol% | crust molar abundance | 9.9×10^-5 mol% | 5×10^-9 mol% human molar abundance | 5×10^-6 mol% |

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