barium vs lanthanum vs holmium

barium (chemical element) | lanthanum (chemical element) | holmium (chemical element)

Periodic table location

Images

| barium | lanthanum | holmium atomic symbol | Ba | La | Ho atomic number | 56 | 57 | 67 short electronic configuration | [Xe]6s^2 | [Xe]6s^25d^1 | [Xe]6s^24f^11 Aufbau diagram | 6s | 5d 6s | 4f 6s block | s | f | f group | 2 | | period | 6 | 6 | 6 atomic mass | 137.327 u | 138.90547 u | 164.93033 u half-life | (stable) | (stable) | (stable)

| barium | lanthanum | holmium phase at STP | solid | solid | solid melting point | 727 °C | 920 °C | 1474 °C boiling point | 1870 °C | 3464 °C | 2700 °C molar heat of fusion | 8 kJ/mol | 6.2 kJ/mol | 17 kJ/mol molar heat of vaporization | 140 kJ/mol | 400 kJ/mol | 265 kJ/mol specific heat at STP | 205 J/(kg K) | 195 J/(kg K) | 165 J/(kg K) Néel point | | | 132 K (properties at standard conditions)

| barium | lanthanum | holmium density | 3.51 g/cm^3 | 6.146 g/cm^3 | 8.795 g/cm^3 liquid density | 3.338 g/cm^3 | 5.94 g/cm^3 | 8.34 g/cm^3 molar volume | 39.12 cm^3/mol | 22.6 cm^3/mol | 18.75 cm^3/mol Mohs hardness | 1.25 (between talc and gypsum) | 2.5 (between gypsum and calcite) | 1.6 (between gypsum and talc) Vickers hardness | (unknown) | 491 MPa | 481 MPa Brinell hardness | | 363 MPa | 746 MPa bulk modulus | 9.6 GPa | 28 GPa | 40 GPa shear modulus | 4.9 GPa | 14 GPa | 26 GPa Young's modulus | 13 GPa | 37 GPa | 65 GPa Poisson ratio | | 0.28 | 0.23 tensile yield strength | | 125 MPa | 221 MPa ultimate tensile strength | | 130 MPa | 259 MPa sound speed | 1620 m/s | 2475 m/s | 2760 m/s thermal expansion | 2.06×10^-5 K^(-1) | 1.21×10^-5 K^(-1) | 1.12×10^-5 K^(-1) thermal conductivity | 18 W/(m K) | 13 W/(m K) | 16 W/(m K) (properties at standard conditions)

| barium | lanthanum | holmium electrical type | conductor | conductor | conductor resistivity | 3.5×10^-7 Ω m (ohm meters) | 6.1×10^-7 Ω m (ohm meters) | 9.4×10^-7 Ω m (ohm meters) electrical conductivity | 2.9×10^6 S/m (siemens per meter) | 1.6×10^6 S/m (siemens per meter) | 1.1×10^6 S/m (siemens per meter) magnetic type | paramagnetic | paramagnetic | paramagnetic volume magnetic susceptibility | 3.966×10^-5 | 6.761×10^-5 | 0.0482845 mass magnetic susceptibility | 1.13×10^-8 m^3/kg (cubic meters per kilogram) | 1.1×10^-8 m^3/kg (cubic meters per kilogram) | 5.49×10^-6 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 1.552×10^-9 m^3/mol (cubic meters per mole) | 1.528×10^-9 m^3/mol (cubic meters per mole) | 9.05467×10^-7 m^3/mol (cubic meters per mole) Curie point | | | 20 K (kelvins) Néel point | | | 132 K (kelvins) work function | 2.52 eV (Polycrystalline) | 3.5 eV (Polycrystalline) | threshold frequency | 6.093×10^14 Hz (hertz) | 8.463×10^14 Hz (hertz) | superconducting point | (unknown) | 4.88 K (kelvins) | color | (silver) | (silver) | (silver)

| barium | lanthanum | holmium valence | 2 | 3 | 3 electronegativity | 0.89 | 1.1 | 1.23 electron affinity | 13.95 kJ/mol (kilojoules per mole) | 48 kJ/mol (kilojoules per mole) | 50 kJ/mol (kilojoules per mole) first ionization energy | 502.9 kJ/mol (kilojoules per mole) | 538.1 kJ/mol (kilojoules per mole) | 581 kJ/mol (kilojoules per mole) ionization energies | 502.9 kJ/mol | 965.2 kJ/mol | 3600 kJ/mol | 538.1 kJ/mol | 1067 kJ/mol | 1850.3 kJ/mol | 4819 kJ/mol | 5940 kJ/mol | 581 kJ/mol | 1140 kJ/mol | 2204 kJ/mol | 4100 kJ/mol

Reactivity

| barium | lanthanum | holmium term symbol | ^1S_0 | ^2D_(3/2) | ^4I_(15/2) atomic radius | 215 pm | 195 pm | 175 pm covalent radius | 215 pm | 207 pm | 192 pm (electronic ground state properties)

| barium | lanthanum | holmium universe abundance | 1×10^-6 mass% | 2×10^-7 mass% | 5×10^-8 mass% solar abundance | 1×10^-6 mass% | 2×10^-7 mass% | 0 mass% meteorite abundance | 2.7×10^-4 mass% | 2.8×10^-5 mass% | 5.9×10^-6 mass% crust abundance | 0.034 mass% | 0.0034 mass% | 1.2×10^-4 mass% ocean abundance | 3×10^-6 mass% | 3.4×10^-10 mass% | 2.2×10^-11 mass% human abundance | 3×10^-5 mass% | | universe molar abundance | 9×10^-9 mol% | 2×10^-9 mol% | 4×10^-10 mol% solar molar abundance | 9.9×10^-9 mol% | 9.9×10^-10 mol% | 0 mol% meteorite molar abundance | 4.1×10^-5 mol% | 4×10^-6 mol% | 7×10^-7 mol% ocean molar abundance | 1.4×10^-7 mol% | 1.5×10^-11 mol% | 8×10^-6 mol% crust molar abundance | 0.0051 mol% | 5×10^-4 mol% | 1.5×10^-5 mol% human molar abundance | 1.4×10^-6 mol% | |