sulfur vs tellurium vs selenium

sulfur (chemical element) | tellurium (chemical element) | selenium (chemical element)

Periodic table location

Images

| sulfur | tellurium | selenium atomic symbol | S | Te | Se atomic number | 16 | 52 | 34 short electronic configuration | [Ne]3s^23p^4 | [Kr]5s^24d^105p^4 | [Ar]4s^23d^104p^4 Aufbau diagram | 3p 3s | 5p 4d 5s | 4p 3d 4s block | p | p | p group | 16 | 16 | 16 period | 3 | 5 | 4 atomic mass | 32.06 u | 127.6 u | 78.971 u half-life | (stable) | (stable) | (stable)

| sulfur | tellurium | selenium phase at STP | solid | solid | solid melting point | 115.21 °C | 449.51 °C | 221 °C boiling point | 444.72 °C | 988 °C | 685 °C critical temperature | 1314 K | | 1766 K critical pressure | 20.7 MPa | | 27.2 MPa molar heat of fusion | 1.73 kJ/mol | 17.5 kJ/mol | 5.4 kJ/mol molar heat of vaporization | 9.8 kJ/mol | 48 kJ/mol | 26 kJ/mol specific heat at STP | 705 J/(kg K) | 201 J/(kg K) | 321.2 J/(kg K) (properties at standard conditions)

| sulfur | tellurium | selenium density | 1.96 g/cm^3 | 6.24 g/cm^3 | 4.819 g/cm^3 liquid density | 1.819 g/cm^3 | 5.7 g/cm^3 | 3.99 g/cm^3 molar volume | 16.36 cm^3/mol | 20.45 cm^3/mol | 16.39 cm^3/mol Mohs hardness | 2 (≈ gypsum) | 2.25 (between gypsum and calcite) | 2 (≈ gypsum) Brinell hardness | | 180 MPa | 736 MPa bulk modulus | 7.7 GPa | 65 GPa | 8.3 GPa shear modulus | | 16 GPa | 3.7 GPa Young's modulus | | 43 GPa | 10 GPa Poisson ratio | | | 0.33 ultimate tensile strength | | 11 MPa | refractive index | 1.001111 | 1.000991 | 1.000895 sound speed | | 2610 m/s | 3350 m/s thermal conductivity | 0.205 W/(m K) | 3 W/(m K) | 0.52 W/(m K) (properties at standard conditions)

| sulfur | tellurium | selenium electrical type | insulator | semiconductor | resistivity | 1×10^15 Ω m (ohm meters) | 1×10^-4 Ω m (ohm meters) | electrical conductivity | 1×10^-15 S/m (siemens per meter) | 10000 S/m (siemens per meter) | magnetic type | diamagnetic | diamagnetic | diamagnetic volume magnetic susceptibility | -1.22×10^-5 | -2.43×10^-5 | -1.93×10^-5 mass magnetic susceptibility | -6.2×10^-9 m^3/kg (cubic meters per kilogram) | -3.9×10^-9 m^3/kg (cubic meters per kilogram) | -4×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -1.99×10^-10 m^3/mol (cubic meters per mole) | -4.98×10^-10 m^3/mol (cubic meters per mole) | -3.16×10^-10 m^3/mol (cubic meters per mole) work function | | 4.95 eV (Polycrystalline) | 5.9 eV (Polycrystalline) threshold frequency | | 1.197×10^15 Hz (hertz) | 1.427×10^15 Hz (hertz) color | (yellow) | (silver) | (gray) refractive index | 1.001111 | 1.000991 | 1.000895

| sulfur | tellurium | selenium valence | 6 | 6 | 6 electronegativity | 2.58 | 2.1 | 2.55 electron affinity | 200 kJ/mol (kilojoules per mole) | 190.2 kJ/mol (kilojoules per mole) | 195 kJ/mol (kilojoules per mole) first ionization energy | 999.6 kJ/mol (kilojoules per mole) | 869.3 kJ/mol (kilojoules per mole) | 941 kJ/mol (kilojoules per mole) ionization energies | 999.6 kJ/mol | 2252 kJ/mol | 3357 kJ/mol | 4556 kJ/mol | 7004.3 kJ/mol | 8495.8 kJ/mol | 27107 kJ/mol | 31719 kJ/mol | 36621 kJ/mol | 43177 kJ/mol | 869.3 kJ/mol | 1790 kJ/mol | 2698 kJ/mol | 3610 kJ/mol | 5668 kJ/mol | 6820 kJ/mol | 13200 kJ/mol | 941 kJ/mol | 2045 kJ/mol | 2973.7 kJ/mol | 4144 kJ/mol | 6590 kJ/mol | 7880 kJ/mol | 14990 kJ/mol

Reactivity

| sulfur | tellurium | selenium term symbol | ^3P_2 | ^3P_2 | ^3P_2 atomic radius | 100 pm | 140 pm | 115 pm covalent radius | 105 pm | 138 pm | 120 pm van der Waals radius | 180 pm | 206 pm | 190 pm (electronic ground state properties)

| sulfur | tellurium | selenium universe abundance | 0.05 mass% | 9×10^-7 mass% | 3×10^-6 mass% solar abundance | 0.04 mass% | | meteorite abundance | 4 mass% | 2.1×10^-4 mass% | 0.0013 mass% crust abundance | 0.042 mass% | 9.9×10^-8 mass% | 5×10^-6 mass% ocean abundance | 0.093 mass% | | 4.5×10^-8 mass% human abundance | 0.2 mass% | | 5×10^-6 mass% universe molar abundance | 0.002 mol% | 9×10^-9 mol% | 5×10^-8 mol% solar molar abundance | 9.9×10^-4 mol% | | meteorite molar abundance | 2.2 mol% | 3×10^-5 mol% | 2.9×10^-4 mol% ocean molar abundance | 0.018 mol% | | 3.5×10^-9 mol% crust molar abundance | 0.027 mol% | 2×10^-8 mol% | 9.9×10^-7 mol% human molar abundance | 0.039 mol% | | 4×10^-7 mol%