barium vs tungsten vs iridium

barium (chemical element) | tungsten (chemical element) | iridium (chemical element)

Periodic table location

Images

| barium | tungsten | iridium atomic symbol | Ba | W | Ir atomic number | 56 | 74 | 77 short electronic configuration | [Xe]6s^2 | [Xe]6s^24f^145d^4 | [Xe]6s^24f^145d^7 Aufbau diagram | 6s | 5d 4f 6s | 5d 4f 6s block | s | d | d group | 2 | 6 | 9 period | 6 | 6 | 6 atomic mass | 137.327 u | 183.84 u | 192.217 u half-life | (stable) | (stable) | (stable)

| barium | tungsten | iridium phase at STP | solid | solid | solid melting point | 727 °C | 3422 °C | 2466 °C boiling point | 1870 °C | 5555 °C | 4428 °C molar heat of fusion | 8 kJ/mol | 35 kJ/mol | 26 kJ/mol molar heat of vaporization | 140 kJ/mol | 800 kJ/mol | 560 kJ/mol specific heat at STP | 205 J/(kg K) | 132 J/(kg K) | 131 J/(kg K) (properties at standard conditions)

| barium | tungsten | iridium density | 3.51 g/cm^3 | 19.25 g/cm^3 | 22.56 g/cm^3 liquid density | 3.338 g/cm^3 | 17.6 g/cm^3 | 19 g/cm^3 molar volume | 39.12 cm^3/mol | 9.55 cm^3/mol | 8.52 cm^3/mol Mohs hardness | 1.25 (between talc and gypsum) | 7.5 (between quartz and topaz) | 6.5 (between microcline and quartz) Vickers hardness | (unknown) | 3430 MPa | 1760 MPa Brinell hardness | | 2570 MPa | 1670 MPa bulk modulus | 9.6 GPa | 310 GPa | 320 GPa shear modulus | 4.9 GPa | 161 GPa | 210 GPa Young's modulus | 13 GPa | 411 GPa | 528 GPa Poisson ratio | | 0.28 | 0.26 tensile yield strength | | 750 MPa | ultimate tensile strength | | 0.98 GPa | sound speed | 1620 m/s | 5174 m/s | 4825 m/s thermal expansion | 2.06×10^-5 K^(-1) | 4.5×10^-6 K^(-1) | 6.4×10^-6 K^(-1) thermal conductivity | 18 W/(m K) | 170 W/(m K) | 150 W/(m K) (properties at standard conditions)

| barium | tungsten | iridium electrical type | conductor | conductor | conductor resistivity | 3.5×10^-7 Ω m (ohm meters) | 5×10^-8 Ω m (ohm meters) | 4.7×10^-8 Ω m (ohm meters) electrical conductivity | 2.9×10^6 S/m (siemens per meter) | 2×10^7 S/m (siemens per meter) | 2.1×10^7 S/m (siemens per meter) magnetic type | paramagnetic | paramagnetic | paramagnetic volume magnetic susceptibility | 3.966×10^-5 | 8.84×10^-5 | 3.77×10^-5 mass magnetic susceptibility | 1.13×10^-8 m^3/kg (cubic meters per kilogram) | 4.59×10^-9 m^3/kg (cubic meters per kilogram) | 1.67×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 1.552×10^-9 m^3/mol (cubic meters per mole) | 8.44×10^-10 m^3/mol (cubic meters per mole) | 3.21×10^-10 m^3/mol (cubic meters per mole) work function | 2.52 eV (Polycrystalline) | (4.32 to 5.22) eV | (5 to 5.76) eV threshold frequency | 6.093×10^14 Hz (hertz) | (1.045×10^15 to 1.262×10^15) Hz (hertz) | (1.209×10^15 to 1.393×10^15) Hz (hertz) superconducting point | (unknown) | 0.015 K (kelvins) | 0.11 K (kelvins) color | (silver) | (gray) | (silver)

| barium | tungsten | iridium valence | 2 | 6 | 6 electronegativity | 0.89 | 2.36 | 2.2 electron affinity | 13.95 kJ/mol (kilojoules per mole) | 78.6 kJ/mol (kilojoules per mole) | 151 kJ/mol (kilojoules per mole) first ionization energy | 502.9 kJ/mol (kilojoules per mole) | 770 kJ/mol (kilojoules per mole) | 880 kJ/mol (kilojoules per mole) ionization energies | 502.9 kJ/mol | 965.2 kJ/mol | 3600 kJ/mol | 770 kJ/mol | 1700 kJ/mol | 880 kJ/mol | 1600 kJ/mol

Reactivity

| barium | tungsten | iridium term symbol | ^1S_0 | ^5D_0 | ^4F_(9/2) atomic radius | 215 pm | 135 pm | 135 pm covalent radius | 215 pm | 162 pm | 141 pm (electronic ground state properties)

| barium | tungsten | iridium universe abundance | 1×10^-6 mass% | 5×10^-8 mass% | 2×10^-7 mass% solar abundance | 1×10^-6 mass% | 4×10^-7 mass% | 2×10^-7 mass% meteorite abundance | 2.7×10^-4 mass% | 1.2×10^-5 mass% | 5.4×10^-5 mass% crust abundance | 0.034 mass% | 1.1×10^-4 mass% | 4×10^-8 mass% ocean abundance | 3×10^-6 mass% | 1.2×10^-8 mass% | human abundance | 3×10^-5 mass% | | universe molar abundance | 9×10^-9 mol% | 3×10^-10 mol% | 1×10^-9 mol% solar molar abundance | 9.9×10^-9 mol% | 3×10^-9 mol% | 9.9×10^-10 mol% meteorite molar abundance | 4.1×10^-5 mol% | 1×10^-6 mol% | 6×10^-6 mol% ocean molar abundance | 1.4×10^-7 mol% | 4×10^-10 mol% | crust molar abundance | 0.0051 mol% | 1.2×10^-5 mol% | 5×10^-9 mol% human molar abundance | 1.4×10^-6 mol% | |