lithium vs beryllium vs platinum

lithium (chemical element) | beryllium (chemical element) | platinum (chemical element)

Periodic table location

Images

| lithium | beryllium | platinum atomic symbol | Li | Be | Pt atomic number | 3 | 4 | 78 short electronic configuration | [He]2s^1 | [He]2s^2 | [Xe]6s^14f^145d^9 Aufbau diagram | 2s | 2s | 5d 4f 6s block | s | s | d group | 1 | 2 | 10 period | 2 | 2 | 6 atomic mass | 6.94 u | 9.0121831 u | 195.084 u half-life | (stable) | (stable) | (stable)

| lithium | beryllium | platinum phase at STP | solid | solid | solid melting point | 180.54 °C | 1287 °C | 1768.3 °C boiling point | 1342 °C | 2470 °C | 3825 °C critical temperature | 3223 K | | critical pressure | 67 MPa | | molar heat of fusion | 3 kJ/mol | 7.95 kJ/mol | 20 kJ/mol molar heat of vaporization | 147 kJ/mol | 297 kJ/mol | 490 kJ/mol specific heat at STP | 3570 J/(kg K) | 1820 J/(kg K) | 133 J/(kg K) (properties at standard conditions)

| lithium | beryllium | platinum density | 0.535 g/cm^3 | 1.848 g/cm^3 | 21.45 g/cm^3 liquid density | 0.512 g/cm^3 | 1.69 g/cm^3 | 19.77 g/cm^3 molar volume | 13 cm^3/mol | 4.877 cm^3/mol | 9.095 cm^3/mol Mohs hardness | 0.6 (between talc and gypsum) | 5.5 (between apatite and microcline) | 3.5 (between calcite and fluorite) Vickers hardness | | 1670 MPa | 549 MPa Brinell hardness | | 600 MPa | 392 MPa bulk modulus | 11 GPa | 130 GPa | 230 GPa shear modulus | 4.2 GPa | 132 GPa | 61 GPa Young's modulus | 4.9 GPa | 287 GPa | 168 GPa Poisson ratio | | 0.032 | 0.38 tensile yield strength | | 240 MPa | ultimate tensile strength | 15 MPa | 370 MPa | sound speed | 6000 m/s | 13000 m/s | 2680 m/s thermal expansion | 4.6×10^-5 K^(-1) | 1.13×10^-5 K^(-1) | 8.8×10^-6 K^(-1) thermal conductivity | 85 W/(m K) | 190 W/(m K) | 72 W/(m K) (properties at standard conditions)

| lithium | beryllium | platinum electrical type | conductor | conductor | conductor resistivity | 9.4×10^-8 Ω m (ohm meters) | 4×10^-8 Ω m (ohm meters) | 1.1×10^-7 Ω m (ohm meters) electrical conductivity | 1.1×10^7 S/m (siemens per meter) | 2.5×10^7 S/m (siemens per meter) | 9.4×10^6 S/m (siemens per meter) magnetic type | paramagnetic | diamagnetic | paramagnetic volume magnetic susceptibility | 1.37×10^-5 | -2.328×10^-5 | 2.573×10^-4 mass magnetic susceptibility | 2.56×10^-8 m^3/kg (cubic meters per kilogram) | -1.26×10^-8 m^3/kg (cubic meters per kilogram) | 1.22×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 1.78×10^-10 m^3/mol (cubic meters per mole) | -1.136×10^-10 m^3/mol (cubic meters per mole) | 2.38×10^-9 m^3/mol (cubic meters per mole) work function | 2.93 eV (Polycrystalline) | 4.98 eV (Polycrystalline) | (5.12 to 5.93) eV threshold frequency | 7.085×10^14 Hz (hertz) | 1.204×10^15 Hz (hertz) | (1.238×10^15 to 1.434×10^15) Hz (hertz) superconducting point | | 0.026 K (kelvins) | color | (silver) | (slate gray) | (gray)

| lithium | beryllium | platinum valence | 1 | 2 | 6 electronegativity | 0.98 | 1.57 | 2.28 electron affinity | 59.6 kJ/mol (kilojoules per mole) | 0 kJ/mol (kilojoules per mole) | 205.3 kJ/mol (kilojoules per mole) first ionization energy | 520.2 kJ/mol (kilojoules per mole) | 899.5 kJ/mol (kilojoules per mole) | 870 kJ/mol (kilojoules per mole) ionization energies | 520.2 kJ/mol | 7298.1 kJ/mol | 11815 kJ/mol | 899.5 kJ/mol | 1757.1 kJ/mol | 14848.7 kJ/mol | 21006.6 kJ/mol | 870 kJ/mol | 1791 kJ/mol

Reactivity

| lithium | beryllium | platinum term symbol | ^2S_(1/2) | ^1S_0 | ^3D_3 atomic radius | 145 pm | 105 pm | 135 pm covalent radius | 128 pm | 96 pm | 136 pm van der Waals radius | 182 pm | | 175 pm (electronic ground state properties)

| lithium | beryllium | platinum universe abundance | 6×10^-7 mass% | 1×10^-7 mass% | 5×10^-7 mass% solar abundance | 6×10^-9 mass% | 1×10^-8 mass% | 9×10^-7 mass% meteorite abundance | 1.7×10^-4 mass% | 2.9×10^-6 mass% | 9.8×10^-5 mass% crust abundance | 0.0017 mass% | 1.9×10^-4 mass% | 3.7×10^-6 mass% ocean abundance | 1.8×10^-5 mass% | 6×10^-11 mass% | human abundance | 3×10^-6 mass% | 4×10^-8 mass% | universe molar abundance | 1×10^-7 mol% | 1×10^-8 mol% | 3×10^-9 mol% solar molar abundance | 9.9×10^-10 mol% | 9.9×10^-10 mol% | 6×10^-9 mol% meteorite molar abundance | 4.6×10^-4 mol% | 7×10^-6 mol% | 1×10^-5 mol% ocean molar abundance | 1.6×10^-5 mol% | 4.1×10^-11 mol% | crust molar abundance | 0.005 mol% | 4.3×10^-4 mol% | 4×10^-7 mol% human molar abundance | 2.7×10^-6 mol% | 3×10^-8 mol% |