carbon, hydrogen, potassium

carbon (chemical element) | hydrogen (chemical element) | potassium (chemical element)

Periodic table location

Images

| carbon | hydrogen | potassium atomic symbol | C | H | K atomic number | 6 | 1 | 19 short electronic configuration | [He]2s^22p^2 | 1s^1 | [Ar]4s^1 Aufbau diagram | 2p 2s | 1s | 4s block | p | s | s group | 14 | 1 | 1 period | 2 | 1 | 4 atomic mass | 12.011 u | 1.008 u | 39.0983 u half-life | (stable) | (stable) | (stable)

| carbon | hydrogen | potassium phase at STP | solid | gas | solid melting point | 3550 °C | -259.14 °C | 63.38 °C boiling point | 4027 °C | -252.87 °C | 759 °C critical temperature | | 32.97 K | 2223 K critical pressure | | 1.293 MPa | 16 MPa molar heat of fusion | 105 kJ/mol | 0.558 kJ/mol | 2.33 kJ/mol molar heat of vaporization | 715 kJ/mol | 0.452 kJ/mol | 76.9 kJ/mol specific heat at STP | 710 J/(kg K) | 14300 J/(kg K) | 757 J/(kg K) adiabatic index | | 7/5 | (properties at standard conditions)

| carbon | hydrogen | potassium density | 2.26 g/cm^3 | 8.99×10^-5 g/cm^3 | 0.856 g/cm^3 liquid density | | | 0.828 g/cm^3 molar volume | 5.315 cm^3/mol | 11200 cm^3/mol | 45.7 cm^3/mol Mohs hardness | 0.5 (between talc and gypsum) | | 0.4 (between talc and gypsum) Brinell hardness | | | 0.363 MPa bulk modulus | 33 GPa | | 3.1 GPa shear modulus | | | 1.3 GPa refractive index | 2.417 | 1.000132 | sound speed | 18350 m/s | 1270 m/s | 2000 m/s thermal expansion | 7.1×10^-6 K^(-1) | | thermal conductivity | 140 W/(m K) | 0.1805 W/(m K) | 100 W/(m K) (properties at standard conditions)

| carbon | hydrogen | potassium electrical type | conductor | | conductor resistivity | 1×10^-5 Ω m (ohm meters) | | 7×10^-8 Ω m (ohm meters) electrical conductivity | 100000 S/m (siemens per meter) | | 1.4×10^7 S/m (siemens per meter) magnetic type | diamagnetic | diamagnetic | paramagnetic volume magnetic susceptibility | -1.4×10^-5 | -2.23×10^-9 | 5.74×10^-6 mass magnetic susceptibility | -6.2×10^-9 m^3/kg (cubic meters per kilogram) | -2.48×10^-8 m^3/kg (cubic meters per kilogram) | 6.7×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -7.45×10^-11 m^3/mol (cubic meters per mole) | -4.999×10^-11 m^3/mol (cubic meters per mole) | 2.62×10^-10 m^3/mol (cubic meters per mole) work function | 5 eV (Polycrystalline) | | 2.29 eV (Polycrystalline) threshold frequency | 1.209×10^15 Hz (hertz) | | 5.537×10^14 Hz (hertz) color | (black) | (colorless) | (silver) refractive index | 2.417 | 1.000132 |

| carbon | hydrogen | potassium valence | 4 | 1 | 1 electronegativity | 2.55 | 2.2 | 0.82 electron affinity | 153.9 kJ/mol (kilojoules per mole) | 72.8 kJ/mol (kilojoules per mole) | 48.4 kJ/mol (kilojoules per mole) first ionization energy | 1086.5 kJ/mol (kilojoules per mole) | 1312 kJ/mol (kilojoules per mole) | 418.8 kJ/mol (kilojoules per mole) ionization energies | 1086.5 kJ/mol | 2352.6 kJ/mol | 4620.5 kJ/mol | 6222.7 kJ/mol | 37831 kJ/mol | 47277 kJ/mol | 1312 kJ/mol | 418.8 kJ/mol | 3052 kJ/mol | 4420 kJ/mol | 5877 kJ/mol | 7975 kJ/mol | 9590 kJ/mol | 11343 kJ/mol | 14944 kJ/mol | 16963.7 kJ/mol | 48610 kJ/mol

Reactivity

| carbon | hydrogen | potassium term symbol | ^3P_0 | ^2S_(1/2) | ^2S_(1/2) atomic radius | 70 pm | 25 pm | 220 pm covalent radius | 76 pm | 31 pm | 203 pm van der Waals radius | 170 pm | 120 pm | 275 pm (electronic ground state properties)

| carbon | hydrogen | potassium universe abundance | 0.5 mass% | 75 mass% | 3×10^-4 mass% solar abundance | 0.3 mass% | 75 mass% | 4×10^-4 mass% meteorite abundance | 1.5 mass% | 2.4 mass% | 0.07 mass% crust abundance | 0.18 mass% | 0.15 mass% | 1.5 mass% ocean abundance | 0.0028 mass% | 11 mass% | 0.042 mass% human abundance | 23 mass% | 10 mass% | 0.2 mass% universe molar abundance | 0.05 mol% | 93 mol% | 1×10^-5 mol% solar molar abundance | 0.03 mol% | 93 mol% | 9.9×10^-6 mol% meteorite molar abundance | 1.8 mol% | 17 mol% | 0.037 mol% ocean molar abundance | 0.0014 mol% | 66 mol% | 0.0066 mol% crust molar abundance | 0.31 mol% | 3.1 mol% | 0.78 mol% human molar abundance | 12 mol% | 62 mol% | 0.032 mol%

| carbon | hydrogen | potassium half-life | (stable) | (stable) | (stable) stable isotopes | C-12 (98.89%) | C-13 (1.11%) | H-1 (99.985%) | H-2 (1.5×10^-4) | K-39 (93.2581%) | K-41 (6.7302%) nuclear spin | C-8: 0^+ | C-9: 3/2^- | C-10: 0^+ | C-11: 3/2^- | C-12: 0^+ | C-13: 1/2^- | C-14: 0^+ | C-15: 1/2^+ | C-16: 0^+ | C-17: 3/2^+ | C-18: 0^+ | C-19: 1/2^+ | C-20: 0^+ | C-21: 1/2^+ | C-22: 0^+ | H-1: 1/2^+ | H-2: 1^+ | H-3: 1/2^+ | H-4: 2^- | H-5: 1/2^+ | H-6: 2^- | H-7: 1/2^+ | K-32: 1^+ | K-33: 3/2^+ | K-34: 1^+ | K-35: 3/2^+ | K-36: 2^+ | K-37: 3/2^+ | K-38: 3^+ | K-39: 3/2^+ | K-40: 4^- | K-41: 3/2^+ | K-42: 2^- | K-43: 3/2^+ | K-44: 2^- | K-45: 3/2^+ | K-46: 2^- | K-47: 1/2^+ | K-48: 2^- | K-49: 3/2^+ | K-52: 2^- | K-53: 3/2^+ | K-54: 2^- | K-55: 3/2^+ unstable isotopes | C-14 (5700 yr) | C-11 (20.334 min) | C-10 (19.29 s) | C-15 (2.449 s) | C-16 (747 ms) | C-17 (193 ms) | C-9 (126.5 ms) | C-18 (92 ms) | C-19 (49 ms) | C-20 (14 ms) | C-22 (6.2 ms) | C-21 (30 ns) | C-8 (2 zs) | H-3 (12.32 yr) | H-6 (0.29 zs) | H-4 (0.139 zs) | H-5 (0.08 zs) | H-7 (0.023 zs) | K-40 (1.248 Gyr) | K-43 (22.3 h) | K-42 (12.321 h) | K-44 (22.13 min) | K-45 (17.81 min) | K-38 (7.637 min) | K-46 (105 s) | K-47 (17.5 s) | K-48 (6.8 s) | K-49 (1.26 s) | K-37 (1.226 s) | K-50 (472 ms) | K-51 (365 ms) | K-36 (342 ms) | K-35 (178 ms) | K-52 (105 ms) | K-53 (30 ms) | K-54 (10 ms) | K-55 (3 ms) | K-34 (25 ns) | K-33 (25 ns) neutron cross-section | 0.0035 b | 0.332 b | 2.1 b neutron mass absorption | 1.5×10^-5 m^2/kg | 0.011 m^2/kg | 0.0018 m^2/kg

| carbon | hydrogen | potassium CAS number | 7440-44-0 | 1333-74-0 | 7440-09-7 PubChem CID number | | 783 | 5462222