group 13 elements

group 13 elements

boron | aluminum | gallium | indium | thallium | nihonium (total: 6)

Periodic table location

Images

| atomic symbol | atomic number | short electronic configuration boron | B | 5 | [He]2s^22p^1 aluminum | Al | 13 | [Ne]3s^23p^1 gallium | Ga | 31 | [Ar]4s^23d^104p^1 indium | In | 49 | [Kr]5s^24d^105p^1 thallium | Tl | 81 | [Xe]6s^24f^145d^106p^1 nihonium | Nh | 113 | [Rn]7s^25f^146d^107p^1 | Aufbau diagram | block | group boron | 2p 2s | p | 13 aluminum | 3p 3s | p | 13 gallium | 4p 3d 4s | p | 13 indium | 5p 4d 5s | p | 13 thallium | 6p 5d 4f 6s | p | 13 nihonium | 7p 6d 5f 7s | p | 13 | period | atomic mass | half-life boron | 2 | 10.81 u | (stable) aluminum | 3 | 26.9815385 u | (stable) gallium | 4 | 69.723 u | (stable) indium | 5 | 114.818 u | (stable) thallium | 6 | 204.38 u | (stable) nihonium | 7 | 286 u | 20 min

phase at STP | all | solid melting point | median | 304 °C | highest | 2075 °C (boron) | lowest | 29.76 °C (gallium) | distribution | boiling point | median | 2204 °C | highest | 4000 °C (boron) | lowest | 1473 °C (thallium) | distribution | molar heat of fusion | median | 5.59 kJ/mol | highest | 50 kJ/mol (boron) | lowest | 3.26 kJ/mol (indium) molar heat of vaporization | median | 256 kJ/mol | highest | 507 kJ/mol (boron) | lowest | 165 kJ/mol (thallium) | distribution | specific heat at STP | median | 371 J/(kg K) | highest | 1030 J/(kg K) (boron) | lowest | 129 J/(kg K) (thallium) | distribution | (properties at standard conditions)

density | median | 5.904 g/cm^3 | highest | 11.85 g/cm^3 (thallium) | lowest | 2.46 g/cm^3 (boron) | distribution | liquid density | median | 6.095 g/cm^3 | highest | 11.22 g/cm^3 (thallium) | lowest | 2.08 g/cm^3 (boron) | distribution | molar volume | median | 11.81 cm^3/mol | highest | 17.247 cm^3/mol (thallium) | lowest | 4.394 cm^3/mol (boron) | distribution | Mohs hardness | median | 1.5 | highest | 9.3 (between corundum and diamond) (boron) | lowest | 1.2 (between talc and gypsum) (indium and thallium) | distribution | Vickers hardness | all | 167 MPa | 49000 MPa Brinell hardness | all | 8.83 MPa | 26.4 MPa | 60 MPa | 245 MPa bulk modulus | median | 76 GPa | highest | 320 GPa (boron) | lowest | 43 GPa (thallium) Young's modulus | median | 11 GPa | highest | 70 GPa (aluminum) | lowest | 8 GPa (thallium) Poisson ratio | all | 0.35 | 0.45 ultimate tensile strength | all | 2 MPa | 4 MPa | 7 MPa sound speed | median | 2740 m/s | highest | 16200 m/s (boron) | lowest | 818 m/s (thallium) | distribution | thermal expansion | median | 2.99×10^-5 K^(-1) | highest | 1.2×10^-4 K^(-1) (gallium) | lowest | 6×10^-6 K^(-1) (boron) thermal conductivity | median | 46 W/(m K) | highest | 235 W/(m K) (aluminum) | lowest | 27 W/(m K) (boron) | distribution | (properties at standard conditions)

resistivity | median | 1.4×10^-7 Ω m (ohm meters) | highest | 10000 Ω m (ohm meters) (boron) | lowest | 2.6×10^-8 Ω m (ohm meters) (aluminum) electrical conductivity | median | 7.1×10^6 S/m (siemens per meter) | highest | 3.8×10^7 S/m (siemens per meter) (aluminum) | lowest | 1×10^-4 S/m (siemens per meter) (boron) | distribution | volume magnetic susceptibility | median | -1.77×10^-5 | highest | 2.11×10^-5 (aluminum) | lowest | -3.56×10^-5 (thallium) | distribution | mass magnetic susceptibility | median | -3×10^-9 m^3/kg (cubic meters per kilogram) | highest | 7.8×10^-9 m^3/kg (cubic meters per kilogram) (aluminum) | lowest | -8.7×10^-9 m^3/kg (cubic meters per kilogram) (boron) | distribution | molar magnetic susceptibility | median | -1.61×10^-10 m^3/mol (cubic meters per mole) | highest | 2.1×10^-10 m^3/mol (cubic meters per mole) (aluminum) | lowest | -6.13×10^-10 m^3/mol (cubic meters per mole) (thallium) | distribution | work function | all | 3.84 eV | 4.09 eV | 4.32 eV | 4.45 eV | (4.06 to 4.26) eV superconducting point | median | 1.78 K (kelvins) | highest | 3.41 K (kelvins) (indium) | lowest | 1.083 K (kelvins) (gallium) | distribution |

valence | median | 3 | highest | 3 (5 elements) | lowest | 3 (5 elements) electronegativity | median | 1.78 | highest | 2.04 (boron) | lowest | 1.61 (aluminum) | distribution | electron affinity | median | 28.9 kJ/mol (kilojoules per mole) | highest | 42.5 kJ/mol (kilojoules per mole) (aluminum) | lowest | 19.2 kJ/mol (kilojoules per mole) (thallium) | distribution | first ionization energy | median | 578.8 kJ/mol (kilojoules per mole) | highest | 800.6 kJ/mol (kilojoules per mole) (boron) | lowest | 558.3 kJ/mol (kilojoules per mole) (indium)

term symbol | all | ^2P_(1/2) atomic radius | median | 130 pm | highest | 190 pm (thallium) | lowest | 85 pm (boron) | distribution | covalent radius | median | 122 pm | highest | 145 pm (thallium) | lowest | 84 pm (boron) | distribution | van der Waals radius | median | 193 pm | highest | 196 pm (thallium) | lowest | 187 pm (gallium) | distribution | (electronic ground state properties)