អ៊ីដ្រូសែន

- ← hydrogen → helium - ↑ H ↓ Li 1H Periodic table
Appearance
Colorless gas with purple glow in its plasma state Spectral lines of hydrogen
General properties
Name, symbol, number	hydrogen, H, 1
Pronunciation	/ˈhaɪdrɵdʒɨn/ hye-dro-jin
Element category	nonmetal
Group, period, block	1, 1, s
Standard atomic weight	1.00794(7)
Electron configuration	1s1
Electrons per shell	1 (Image)
Physical properties
Color	colorless
Phase	gas
Density	(0 °C, 101.325 kPa) 0.08988 g/L
Liquid density at m.p.	0.07 (0.0763 solid) g·cm−3
Liquid density at b.p.	0.07099 g·cm−3
Melting point	14.01 K, -259.14 °C, -434.45 °F
Boiling point	20.28 K, -252.87 °C, -423.17 °F
Triple point	13.8033 K (-259°C), 7.042 kPa
Critical point	32.97 K, 1.293 MPa
Heat of fusion	(H2) 0.117 kJ·mol−1
Heat of vaporization	(H2) 0.904 kJ·mol−1
Molar heat capacity	(H2) 28.836 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 15 20
Atomic properties
Oxidation states	1, -1 (amphoteric oxide)
Electronegativity	2.20 (Pauling scale)
Ionization energies	1st: 1312.0 kJ·mol−1
Covalent radius	31±5 pm
Van der Waals radius	120 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	diamagnetic
Thermal conductivity	0.1805 W·m−1·K−1
Speed of sound	(gas, 27 °C) 1310 m·s−1
CAS registry number	1333-74-0
Most stable isotopes
Main article: Isotopes of hydrogen
iso NA half-life DM DE (MeV) DP 1H 99.985% 1H is stable with 0 neutrons 2H 0.015% 2H is stable with 1 neutron 3H trace 12.32 y β− 0.01861 3He

'អ៊ីដ្រូសែន ជាធាតុគីមី ដែលត្រូវបានរកឃើញដោយលោក ហង់រី កាវិនឌីស (Henry Cavendish)​នៅឆ្នាំ ១៧៦៦ នៅទីក្រុងឡុង ប្រទេសអង់គ្លេស។ ឈ្មោះរបស់ អ៊ីដ្រូសែន យកតាមភាសាក្រិច៖​ hydrogenes=hydro + genes មានន័យថា ការបង្កើតជាទឹក (water forming)។ អ៊ីដ្រូសែនជាឧស្ម័នគ្មានពណ៌ គ្មានក្លិន និងអាចឆេះបាន។

មើលផងដែរ

Antihydrogen Hydrogen ion Oxyhydrogen

Fuel cell

អានបន្ថែម

• Chart of the Nuclides (17th ed.). Knolls Atomic Power Laboratory. 2010. ល.ស.ប.អ. 978-0984365302. http://www.nuclidechart.com/. 
• Ferreira-Aparicio, P; M. J. Benito, J. L. Sanz (2005). "New Trends in Reforming Technologies: from Hydrogen Industrial Plants to Multifuel Microreformers". Catalysis Reviews 47 (4): 491–588. doi:10.1080/01614940500364958. 
• Newton, David E. (1994). The Chemical Elements. New York: Franklin Watts. ល.ស.ប.អ. 0-531-12501-7. 
• Rigden, John S. (2002). Hydrogen: The Essential Element. Cambridge, Massachusetts: Harvard University Press. ល.ស.ប.អ. 0-531-12501-7. 
• Romm, Joseph, J. (2004). The Hype about Hydrogen, Fact and Fiction in the Race to Save the Climate. Island Press. ល.ស.ប.អ. 1-55963-703-X.  Author interview at Global Public Media.
• Scerri, Eric (2007). The Periodic System, Its Story and Its Significance,. New York: Oxford University Press. ល.ស.ប.អ. 0-19-530573-6. 

តំណភ្ជាប់ខាងក្រៅ

• Basic Hydrogen Calculations of Quantum Mechanics
• Hydrogen (University of Nottingham)
• High temperature hydrogen phase diagram
• Wavefunction of hydrogen