Na, Al

sodium (chemical element) | aluminum (chemical element)

Periodic table location

Images

| sodium | aluminum atomic symbol | Na | Al atomic number | 11 | 13 short electronic configuration | [Ne]3s^1 | [Ne]3s^23p^1 Aufbau diagram | 3s | 3p 3s block | s | p group | 1 | 13 period | 3 | 3 atomic mass | 22.98976928 u | 26.9815385 u half-life | (stable) | (stable)

| sodium | aluminum phase at STP | solid | solid melting point | 97.72 °C | 660.32 °C boiling point | 883 °C | 2519 °C critical temperature | 2573 K | critical pressure | 35 MPa | molar heat of fusion | 2.6 kJ/mol | 10.7 kJ/mol molar heat of vaporization | 97.7 kJ/mol | 293 kJ/mol specific heat at STP | 1230 J/(kg K) | 904 J/(kg K) (properties at standard conditions)

| sodium | aluminum density | 0.968 g/cm^3 | 2.7 g/cm^3 liquid density | 0.927 g/cm^3 | 2.375 g/cm^3 molar volume | 23.7 cm^3/mol | 10 cm^3/mol Mohs hardness | 0.5 (between talc and gypsum) | 2.75 (between calcite and gypsum) Vickers hardness | | 167 MPa Brinell hardness | 0.69 MPa | 245 MPa bulk modulus | 6.3 GPa | 76 GPa shear modulus | 3.3 GPa | 26 GPa Young's modulus | 10 GPa | 70 GPa Poisson ratio | | 0.35 ultimate tensile strength | 10 MPa | sound speed | 3200 m/s | 5100 m/s thermal expansion | 7.1×10^-5 K^(-1) | 2.31×10^-5 K^(-1) thermal conductivity | 140 W/(m K) | 235 W/(m K) (properties at standard conditions)

| sodium | aluminum electrical type | conductor | conductor resistivity | 4.7×10^-8 Ω m (ohm meters) | 2.6×10^-8 Ω m (ohm meters) electrical conductivity | 2.1×10^7 S/m (siemens per meter) | 3.8×10^7 S/m (siemens per meter) magnetic type | paramagnetic | paramagnetic volume magnetic susceptibility | 8.5×10^-6 | 2.11×10^-5 mass magnetic susceptibility | 8.8×10^-9 m^3/kg (cubic meters per kilogram) | 7.8×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 2×10^-10 m^3/mol (cubic meters per mole) | 2.1×10^-10 m^3/mol (cubic meters per mole) work function | 2.36 eV (Polycrystalline) | (4.06 to 4.26) eV threshold frequency | 5.706×10^14 Hz (hertz) | (9.817×10^14 to 1.03×10^15) Hz (hertz) superconducting point | | 1.175 K (kelvins) color | (silver) | (silver)

| sodium | aluminum valence | 1 | 3 electronegativity | 0.93 | 1.61 electron affinity | 52.8 kJ/mol (kilojoules per mole) | 42.5 kJ/mol (kilojoules per mole) first ionization energy | 495.8 kJ/mol (kilojoules per mole) | 577.5 kJ/mol (kilojoules per mole) ionization energies | 495.8 kJ/mol | 4562 kJ/mol | 6910.3 kJ/mol | 9543 kJ/mol | 13354 kJ/mol | 16613 kJ/mol | 20117 kJ/mol | 25496 kJ/mol | 28932 kJ/mol | 141362 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

Reactivity

| sodium | aluminum term symbol | ^2S_(1/2) | ^2P_(1/2) atomic radius | 180 pm | 125 pm covalent radius | 166 pm | 121 pm van der Waals radius | 227 pm | (electronic ground state properties)

| sodium | aluminum universe abundance | 0.002 mass% | 0.005 mass% solar abundance | 0.004 mass% | 0.006 mass% meteorite abundance | 0.55 mass% | 0.91 mass% crust abundance | 2.3 mass% | 8.1 mass% ocean abundance | 1.1 mass% | 5×10^-7 mass% human abundance | 0.14 mass% | 9×10^-5 mass% universe molar abundance | 1×10^-4 mol% | 2×10^-4 mol% solar molar abundance | 2×10^-4 mol% | 3×10^-4 mol% meteorite molar abundance | 0.48 mol% | 0.67 mol% ocean molar abundance | 0.3 mol% | 1.1×10^-7 mol% crust molar abundance | 2.1 mol% | 6.3 mol% human molar abundance | 0.038 mol% | 2.1×10^-5 mol%

| sodium | aluminum half-life | (stable) | (stable) stable isotopes | Na-23 (100%) | Al-27 (100%) nuclear spin | Na-18: 1^- | Na-19: 5/2^+ | Na-20: 2^+ | Na-21: 3/2^+ | Na-22: 3^+ | Na-23: 3/2^+ | Na-24: 4^+ | Na-25: 5/2^+ | Na-26: 3^+ | Na-27: 5/2^+ | Na-28: 1^+ | Na-29: 3/2^+ | Na-30: 2^+ | Na-31: 3/2^+ | Na-33: 3/2^+ | Na-34: 1^+ | Na-35: 3/2^+ | Na-37: 3/2^+ | Al-21: 5/2^+ | Al-22: 3^+ | Al-23: 5/2^+ | Al-24: 4^+ | Al-25: 5/2^+ | Al-26: 5^+ | Al-27: 5/2^+ | Al-28: 3^+ | Al-29: 5/2^+ | Al-30: 3^+ | Al-32: 1^+ | Al-33: 5/2^+ | Al-34: 4^- | Al-35: 5/2^+ | Al-37: 3/2^+ | Al-39: 3/2^+ | Al-41: 3/2^+ unstable isotopes | Na-22 (2.6027 yr) | Na-24 (14.997 h) | Na-25 (59.1 s) | Na-21 (22.49 s) | Na-26 (1.077 s) | Na-20 (447.9 ms) | Na-27 (301 ms) | Na-30 (48.4 ms) | Na-29 (44.9 ms) | Na-28 (30.5 ms) | Na-31 (17 ms) | Na-32 (13.2 ms) | Na-33 (8 ms) | Na-34 (5.5 ms) | Na-35 (1.5 ms) | Na-36 (180 ns) | Na-37 (60 ns) | Na-19 (40 ns) | Na-18 (1.3 zs) | Al-26 (0.717 Myr) | Al-29 (6.57 min) | Al-28 (134.48 s) | Al-25 (7.183 s) | Al-30 (3.6 s) | Al-24 (2.053 s) | Al-31 (644 ms) | Al-23 (470 ms) | Al-36 (90 ms) | Al-22 (59 ms) | Al-34 (42 ms) | Al-33 (41.7 ms) | Al-35 (38.6 ms) | Al-32 (33 ms) | Al-37 (10.7 ms) | Al-38 (7.6 ms) | Al-39 (7.6 µs) | Al-41 (260 ns) | Al-40 (260 ns) | Al-42 (170 ns) | Al-21 (35 ns) neutron cross-section | 0.53 b | 0.233 b neutron mass absorption | 7×10^-4 m^2/kg | 0.03 m^2/kg

| sodium | aluminum CAS number | 7440-23-5 | 7429-90-5 PubChem CID number | 5360545 | 5359268