thallium vs cerium vs holmium vs thulium vs praseodymium

thallium (chemical element) | cerium (chemical element) | holmium (chemical element) | thulium (chemical element) | praseodymium (chemical element)

Periodic table location

Images

| atomic symbol | atomic number | short electronic configuration thallium | Tl | 81 | [Xe]6s^24f^145d^106p^1 cerium | Ce | 58 | [Xe]6s^24f^15d^1 holmium | Ho | 67 | [Xe]6s^24f^11 thulium | Tm | 69 | [Xe]6s^24f^13 praseodymium | Pr | 59 | [Xe]6s^24f^3 | Aufbau diagram | block | group thallium | 6p 5d 4f 6s | p | 13 cerium | 5d 4f 6s | f | holmium | 4f 6s | f | thulium | 4f 6s | f | praseodymium | 4f 6s | f | | period | atomic mass | half-life thallium | 6 | 204.38 u | (stable) cerium | 6 | 140.116 u | (stable) holmium | 6 | 164.93033 u | (stable) thulium | 6 | 168.93422 u | (stable) praseodymium | 6 | 140.90766 u | (stable)

phase at STP | all | solid melting point | median | 931 °C | highest | 1545 °C (thulium) | lowest | 304 °C (thallium) | distribution | boiling point | median | 2700 °C | highest | 3360 °C (cerium) | lowest | 1473 °C (thallium) | distribution | molar heat of fusion | median | 6.9 kJ/mol | highest | 17 kJ/mol (holmium) | lowest | 4.2 kJ/mol (thallium) | distribution | molar heat of vaporization | median | 265 kJ/mol | highest | 350 kJ/mol (cerium) | lowest | 165 kJ/mol (thallium) | distribution | specific heat at STP | median | 165 J/(kg K) | highest | 193 J/(kg K) (praseodymium) | lowest | 129 J/(kg K) (thallium) | distribution | Néel point | median | 56 K | highest | 132 K (holmium) | lowest | 12.5 K (cerium) | distribution | (properties at standard conditions)

density | median | 8.795 g/cm^3 | highest | 11.85 g/cm^3 (thallium) | lowest | 6.64 g/cm^3 (praseodymium) | distribution | liquid density | median | 8.34 g/cm^3 | highest | 11.22 g/cm^3 (thallium) | lowest | 6.5 g/cm^3 (praseodymium) | distribution | molar volume | median | 18.75 cm^3/mol | highest | 21.22 cm^3/mol (praseodymium) | lowest | 17.247 cm^3/mol (thallium) | distribution | Mohs hardness | median | 1.6 | highest | 2.5 (between gypsum and calcite) (cerium) | lowest | 1.2 (between talc and gypsum) (thallium) | distribution | Vickers hardness | all | 270 MPa | 400 MPa | 481 MPa | 520 MPa Brinell hardness | all | 26.4 MPa | 412 MPa | 471 MPa | 481 MPa | 746 MPa bulk modulus | median | 40 GPa | highest | 45 GPa (thulium) | lowest | 22 GPa (cerium) shear modulus | median | 15 GPa | highest | 31 GPa (thulium) | lowest | 2.8 GPa (thallium) | distribution | Young's modulus | median | 37 GPa | highest | 74 GPa (thulium) | lowest | 8 GPa (thallium) | distribution | Poisson ratio | all | 0.21 | 0.23 | 0.24 | 0.28 | 0.45 tensile yield strength | median | 95 MPa | highest | 221 MPa (holmium) | lowest | 60 MPa (thulium) | distribution | ultimate tensile strength | all | 7 MPa | 100 MPa | 110 MPa | 140 MPa | 259 MPa sound speed | median | 2200 m/s | highest | 2760 m/s (holmium) | lowest | 818 m/s (thallium) | distribution | thermal expansion | median | 1.12×10^-5 K^(-1) | highest | 2.99×10^-5 K^(-1) (thallium) | lowest | 6.3×10^-6 K^(-1) (cerium) | distribution | thermal conductivity | median | 16 W/(m K) | highest | 46 W/(m K) (thallium) | lowest | 11 W/(m K) (cerium) (properties at standard conditions)

resistivity | median | 7×10^-7 Ω m (ohm meters) | highest | 9.4×10^-7 Ω m (ohm meters) (holmium) | lowest | 1.5×10^-7 Ω m (ohm meters) (thallium) | distribution | electrical conductivity | median | 1.4×10^6 S/m (siemens per meter) | highest | 6.7×10^6 S/m (siemens per meter) (thallium) | lowest | 1.1×10^6 S/m (siemens per meter) (holmium) volume magnetic susceptibility | median | 0.0028087 | highest | 0.0482845 (holmium) | lowest | -3.56×10^-5 (thallium) | distribution | mass magnetic susceptibility | median | 4.23×10^-7 m^3/kg (cubic meters per kilogram) | highest | 5.49×10^-6 m^3/kg (cubic meters per kilogram) (holmium) | lowest | -3×10^-9 m^3/kg (cubic meters per kilogram) (thallium) | distribution | molar magnetic susceptibility | median | 5.9604×10^-8 m^3/mol (cubic meters per mole) | highest | 9.05467×10^-7 m^3/mol (cubic meters per mole) (holmium) | lowest | -6.13×10^-10 m^3/mol (cubic meters per mole) (thallium) | distribution | Néel point | median | 56 K (kelvins) | highest | 132 K (kelvins) (holmium) | lowest | 12.5 K (kelvins) (cerium) | distribution | work function | all | 2.9 eV | 3.84 eV

valence | median | 3 | highest | 4 (cerium and praseodymium) | lowest | 3 (3 elements) electronegativity | median | 1.23 | highest | 1.62 (thallium) | lowest | 1.12 (cerium) | distribution | electron affinity | median | 50 kJ/mol (kilojoules per mole) | highest | 50 kJ/mol (kilojoules per mole) (4 elements) | lowest | 19.2 kJ/mol (kilojoules per mole) (thallium) first ionization energy | median | 581 kJ/mol (kilojoules per mole) | highest | 596.7 kJ/mol (kilojoules per mole) (thulium) | lowest | 527 kJ/mol (kilojoules per mole) (praseodymium)

term symbol | all | ^1G_4 | ^2F_(7/2) | ^2P_(1/2) | ^4I_(9/2) | ^4I_(15/2) atomic radius | median | 185 pm | highest | 190 pm (thallium) | lowest | 175 pm (holmium and thulium) | distribution | covalent radius | median | 192 pm | highest | 204 pm (cerium) | lowest | 145 pm (thallium) | distribution | (electronic ground state properties)