carbon, hydrogen, nitrogen

carbon (chemical element) | hydrogen (chemical element) | nitrogen (chemical element)

Periodic table location

Images

| carbon | hydrogen | nitrogen atomic symbol | C | H | N atomic number | 6 | 1 | 7 short electronic configuration | [He]2s^22p^2 | 1s^1 | [He]2s^22p^3 Aufbau diagram | 2p 2s | 1s | 2p 2s block | p | s | p group | 14 | 1 | 15 period | 2 | 1 | 2 atomic mass | 12.011 u | 1.008 u | 14.007 u half-life | (stable) | (stable) | (stable)

| carbon | hydrogen | nitrogen phase at STP | solid | gas | gas melting point | 3550 °C | -259.14 °C | -210.1 °C boiling point | 4027 °C | -252.87 °C | -195.79 °C critical temperature | | 32.97 K | 126.21 K critical pressure | | 1.293 MPa | 3.39 MPa molar heat of fusion | 105 kJ/mol | 0.558 kJ/mol | 0.36 kJ/mol molar heat of vaporization | 715 kJ/mol | 0.452 kJ/mol | 2.79 kJ/mol specific heat at STP | 710 J/(kg K) | 14300 J/(kg K) | 1040 J/(kg K) adiabatic index | | 7/5 | 7/5 (properties at standard conditions)

| carbon | hydrogen | nitrogen density | 2.26 g/cm^3 | 8.99×10^-5 g/cm^3 | 0.001251 g/cm^3 molar volume | 5.315 cm^3/mol | 11200 cm^3/mol | 11200 cm^3/mol Mohs hardness | 0.5 (between talc and gypsum) | | bulk modulus | 33 GPa | | refractive index | 2.417 | 1.000132 | 1.000298 sound speed | 18350 m/s | 1270 m/s | 333.6 m/s thermal expansion | 7.1×10^-6 K^(-1) | | thermal conductivity | 140 W/(m K) | 0.1805 W/(m K) | 0.02583 W/(m K) (properties at standard conditions)

| carbon | hydrogen | nitrogen electrical type | conductor | | resistivity | 1×10^-5 Ω m (ohm meters) | | electrical conductivity | 100000 S/m (siemens per meter) | | magnetic type | diamagnetic | diamagnetic | diamagnetic volume magnetic susceptibility | -1.4×10^-5 | -2.23×10^-9 | -6.8×10^-9 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) | -5.4×10^-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) | -1.5×10^-10 m^3/mol (cubic meters per mole) work function | 5 eV (Polycrystalline) | | threshold frequency | 1.209×10^15 Hz (hertz) | | color | (black) | (colorless) | (colorless) refractive index | 2.417 | 1.000132 | 1.000298

| carbon | hydrogen | nitrogen valence | 4 | 1 | 3 electronegativity | 2.55 | 2.2 | 3.04 electron affinity | 153.9 kJ/mol (kilojoules per mole) | 72.8 kJ/mol (kilojoules per mole) | 7 kJ/mol (kilojoules per mole) first ionization energy | 1086.5 kJ/mol (kilojoules per mole) | 1312 kJ/mol (kilojoules per mole) | 1402.3 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 | 1402.3 kJ/mol | 2856 kJ/mol | 4578.1 kJ/mol | 7475 kJ/mol | 9444.9 kJ/mol | 53266.6 kJ/mol | 64360 kJ/mol

Reactivity

| carbon | hydrogen | nitrogen term symbol | ^3P_0 | ^2S_(1/2) | ^4S_(3/2) atomic radius | 70 pm | 25 pm | 65 pm covalent radius | 76 pm | 31 pm | 71 pm van der Waals radius | 170 pm | 120 pm | 155 pm (electronic ground state properties)

| carbon | hydrogen | nitrogen universe abundance | 0.5 mass% | 75 mass% | 0.1 mass% solar abundance | 0.3 mass% | 75 mass% | 0.1 mass% meteorite abundance | 1.5 mass% | 2.4 mass% | 0.14 mass% crust abundance | 0.18 mass% | 0.15 mass% | 0.002 mass% ocean abundance | 0.0028 mass% | 11 mass% | 5×10^-5 mass% human abundance | 23 mass% | 10 mass% | 2.6 mass% universe molar abundance | 0.05 mol% | 93 mol% | 0.009 mol% solar molar abundance | 0.03 mol% | 93 mol% | 0.009 mol% meteorite molar abundance | 1.8 mol% | 17 mol% | 0.14 mol% ocean molar abundance | 0.0014 mol% | 66 mol% | 2.2×10^-5 mol% crust molar abundance | 0.31 mol% | 3.1 mol% | 0.0029 mol% human molar abundance | 12 mol% | 62 mol% | 1.2 mol%

| carbon | hydrogen | nitrogen 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) | N-14 (99.634%) | N-15 (0.366%) 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^+ | N-10: 2^- | N-11: 1/2^+ | N-12: 1^+ | N-13: 1/2^- | N-14: 1^+ | N-15: 1/2^- | N-16: 2^- | N-17: 1/2^- | N-18: 1^- | N-19: 1/2^- | N-21: 1/2^- | N-23: 1/2^- | N-25: 1/2^- 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) | N-13 (9.965 min) | N-16 (7.13 s) | N-17 (4.173 s) | N-18 (624 ms) | N-19 (271 ms) | N-20 (130 ms) | N-21 (85 ms) | N-22 (24 ms) | N-23 (14.5 ms) | N-12 (11 ms) | N-25 (260 ns) | N-24 (52 ns) | N-11 (0.59 zs) | N-10 (0.2 zs) neutron cross-section | 0.0035 b | 0.332 b | 1.91 b neutron mass absorption | 1.5×10^-5 m^2/kg | 0.011 m^2/kg | 0.0048 m^2/kg

| carbon | hydrogen | nitrogen CAS number | 7440-44-0 | 1333-74-0 | 7727-37-9 PubChem CID number | | 783 | 947