chlorine vs aluminum vs silicon

chlorine (chemical element) | aluminum (chemical element) | silicon (chemical element)

Periodic table location

Images

| chlorine | aluminum | silicon atomic symbol | Cl | Al | Si atomic number | 17 | 13 | 14 short electronic configuration | [Ne]3s^23p^5 | [Ne]3s^23p^1 | [Ne]3s^23p^2 Aufbau diagram | 3p 3s | 3p 3s | 3p 3s block | p | p | p group | 17 | 13 | 14 period | 3 | 3 | 3 atomic mass | 35.45 u | 26.9815385 u | 28.085 u half-life | (stable) | (stable) | (stable)

| chlorine | aluminum | silicon phase at STP | gas | solid | solid melting point | -101.5 °C | 660.32 °C | 1414 °C boiling point | -34.04 °C | 2519 °C | 2900 °C critical temperature | 416.9 K | | critical pressure | 7.991 MPa | | molar heat of fusion | 3.2 kJ/mol | 10.7 kJ/mol | 50.2 kJ/mol molar heat of vaporization | 10.2 kJ/mol | 293 kJ/mol | 359 kJ/mol specific heat at STP | 478.2 J/(kg K) | 904 J/(kg K) | 710 J/(kg K) adiabatic index | 7/5 | | (properties at standard conditions)

| chlorine | aluminum | silicon density | 0.003214 g/cm^3 | 2.7 g/cm^3 | 2.33 g/cm^3 liquid density | | 2.375 g/cm^3 | 2.57 g/cm^3 molar volume | 11030 cm^3/mol | 10 cm^3/mol | 12.05 cm^3/mol Mohs hardness | | 2.75 (between calcite and gypsum) | 6.5 (between microcline and quartz) Vickers hardness | | 167 MPa | 9630 MPa Brinell hardness | | 245 MPa | bulk modulus | 1.1 GPa | 76 GPa | 100 GPa shear modulus | | 26 GPa | Young's modulus | | 70 GPa | 47 GPa Poisson ratio | | 0.35 | refractive index | 1.000773 | | sound speed | 206 m/s | 5100 m/s | 2200 m/s thermal expansion | | 2.31×10^-5 K^(-1) | 2.6×10^-6 K^(-1) thermal conductivity | 0.0089 W/(m K) | 235 W/(m K) | 150 W/(m K) (properties at standard conditions)

| chlorine | aluminum | silicon electrical type | insulator | conductor | semiconductor resistivity | 100 Ω m (ohm meters) | 2.6×10^-8 Ω m (ohm meters) | 0.001 Ω m (ohm meters) electrical conductivity | 0.01 S/m (siemens per meter) | 3.8×10^7 S/m (siemens per meter) | 1000 S/m (siemens per meter) magnetic type | diamagnetic | paramagnetic | diamagnetic volume magnetic susceptibility | -2.31×10^-8 | 2.11×10^-5 | -3.73×10^-6 mass magnetic susceptibility | -7.2×10^-9 m^3/kg (cubic meters per kilogram) | 7.8×10^-9 m^3/kg (cubic meters per kilogram) | -1.6×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -5.11×10^-10 m^3/mol (cubic meters per mole) | 2.1×10^-10 m^3/mol (cubic meters per mole) | -4.49×10^-11 m^3/mol (cubic meters per mole) work function | | (4.06 to 4.26) eV | (4.6 to 4.91) eV threshold frequency | | (9.817×10^14 to 1.03×10^15) Hz (hertz) | (1.112×10^15 to 1.187×10^15) Hz (hertz) superconducting point | | 1.175 K (kelvins) | color | (yellow) | (silver) | (gray) refractive index | 1.000773 | |

| chlorine | aluminum | silicon valence | 5 | 3 | 4 electronegativity | 3.16 | 1.61 | 1.9 electron affinity | 349 kJ/mol (kilojoules per mole) | 42.5 kJ/mol (kilojoules per mole) | 133.6 kJ/mol (kilojoules per mole) first ionization energy | 1251.2 kJ/mol (kilojoules per mole) | 577.5 kJ/mol (kilojoules per mole) | 786.5 kJ/mol (kilojoules per mole) ionization energies | 1251.2 kJ/mol | 2298 kJ/mol | 3822 kJ/mol | 5158.6 kJ/mol | 6542 kJ/mol | 9362 kJ/mol | 11018 kJ/mol | 33604 kJ/mol | 38600 kJ/mol | 43961 kJ/mol | 577.5 kJ/mol | 1816.7 kJ/mol | 2744.8 kJ/mol | 11577 kJ/mol | 14842 kJ/mol | 18379 kJ/mol | 23326 kJ/mol | 27465 kJ/mol | 31853 kJ/mol | 38473 kJ/mol | 786.5 kJ/mol | 1577.1 kJ/mol | 3231.6 kJ/mol | 4355.5 kJ/mol | 16091 kJ/mol | 19805 kJ/mol | 23780 kJ/mol | 29287 kJ/mol | 33878 kJ/mol | 38726 kJ/mol

Reactivity

| chlorine | aluminum | silicon term symbol | ^2P_(3/2) | ^2P_(1/2) | ^3P_0 atomic radius | 100 pm | 125 pm | 110 pm covalent radius | 102 pm | 121 pm | 111 pm van der Waals radius | 175 pm | | 210 pm (electronic ground state properties)

| chlorine | aluminum | silicon universe abundance | 1×10^-4 mass% | 0.005 mass% | 0.07 mass% solar abundance | 8×10^-4 mass% | 0.006 mass% | 0.09 mass% meteorite abundance | 0.037 mass% | 0.91 mass% | 14 mass% crust abundance | 0.017 mass% | 8.1 mass% | 27 mass% ocean abundance | 2 mass% | 5×10^-7 mass% | 1×10^-4 mass% human abundance | 0.12 mass% | 9×10^-5 mass% | 0.026 mass% universe molar abundance | 4×10^-6 mol% | 2×10^-4 mol% | 0.003 mol% solar molar abundance | 3×10^-5 mol% | 3×10^-4 mol% | 0.004 mol% meteorite molar abundance | 0.016 mol% | 0.67 mol% | 10 mol% ocean molar abundance | 0.35 mol% | 1.1×10^-7 mol% | 2.2×10^-5 mol% crust molar abundance | 0.0099 mol% | 6.3 mol% | 20 mol% human molar abundance | 0.021 mol% | 2.1×10^-5 mol% | 0.0058 mol%