Hydrogen, 1 H Purple glow in its plasma state
Appearance colorless gas Standard atomic weight A r, std (H) [7000100784000000000♠ 1.00784 , 7000100811000000000♠ 1.00811 ] conventional: 7000100800000000000♠ 1.008 Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
– ↑H ↓ Li – ← hydrogen → helium
Atomic number (Z ) 1 Group 1: H and alkali metals Period period 1 Block s-block Element category Reactive nonmetalElectron configuration 1s1 Electrons per shell
1 Phase at STP gas Melting point 13.99 K (−259.16 °C, −434.49 °F) Boiling point 20.271 K (−252.879 °C, −423.182 °F) Density (at STP) 0.08988 g/L when liquid (at m.p. ) 0.07 g/cm3 (solid: 0.0763 g/cm3 ) when liquid (at b.p. ) 0.07099 g/cm3 Triple point 13.8033 K, 7.041 kPa Critical point 32.938 K, 1.2858 MPa Heat of fusion (H2 ) 0.117 kJ/mol Heat of (H2 ) 0.904 kJ/mol Molar heat capacity (H2 ) 28.836 J/(mol·K) pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 15 20
Oxidation states −1 , +1 (an amphoteric oxide)Electronegativity Pauling scale: 2.20 energies Covalent radius 31±5 pm Van der Waals radius 120 pm Spectral lines of hydrogen Natural occurrence primordial Crystal structure hexagonal Speed of sound 1310 m/s (gas, 27 °C) Thermal conductivity 0.1805 W/(m·K) Magnetic ordering diamagnetic Magnetic susceptibility −3.98·10−6 cm3 /mol (298 K) CAS Number 12385-13-6 1333-74-0 (H2 ) Discovery Henry Cavendish (1766) Named by Antoine Lavoisier (1783) Isotope Abundance Half-life (t 1/2 ) Decay mode Product 1 H 99.98% stable 2 H 0.02% stable 3 H trace 12.32 y β− 3 He
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ᱦᱟᱭᱰᱨᱳᱡᱟᱱ ᱫᱚ ᱢᱤᱫ ᱠᱮᱢᱤᱠᱟᱞ ᱤᱞᱤᱢᱮᱱᱴ ᱠᱟᱱᱟ ᱱᱚᱶᱟ ᱨᱮᱱᱟᱜ ᱠᱷᱟᱴᱚ ᱪᱤᱛᱟᱹᱨ ᱫᱚ H ᱠᱟᱱᱟ ᱟᱨ ᱱᱚᱶᱟ ᱨᱮᱱᱟᱜ ᱮᱴᱳᱢᱤᱠ ᱞᱮᱠᱷᱟ ᱫᱚ ᱑ ᱠᱟᱱᱟ ᱾ ᱱᱚᱶᱟ ᱨᱮᱱᱟᱜ ᱦᱟᱢᱟᱞ ᱑ᱹ᱐᱐᱘ ᱠᱟᱱᱟ, ᱦᱟᱭᱰᱨᱳᱡᱟᱱ ᱫᱚ ᱯᱮᱨᱤᱭᱳᱰᱤᱠ ᱴᱮᱵᱟᱞ ᱨᱮᱱᱟᱜ ᱥᱟᱱᱟᱢ ᱠᱷᱚᱱ ᱪᱮᱛᱟᱱ ᱤᱞᱤᱢᱮᱱᱴ ᱠᱟᱱᱟ ᱾ ᱦᱟᱭᱰᱨᱳᱡᱟᱱ ᱫᱚ ᱠᱚᱱᱥᱴᱤᱴᱭᱩᱴᱤᱝ ᱨᱮᱯᱷᱞᱤ ᱨᱮ ᱗᱕% ᱠᱮᱢᱤᱠᱟᱞ ᱥᱟᱵᱽᱥᱴᱟᱱᱥ ᱨᱮᱱᱟᱜ ᱵᱟᱨᱭᱳᱱᱤᱠ ᱢᱟᱥ ᱠᱟᱱᱟ ᱾
H+
ᱛᱟᱦᱮᱱᱟ
ᱱᱚᱶᱟ ᱫᱚ ᱡᱟᱦᱟᱸ ᱨᱮᱜᱮ ᱦᱟᱭᱰᱨᱳᱡᱟᱱ ᱢᱟᱨᱟᱝ ᱥᱟᱨᱮᱡ ᱢᱚᱛᱨᱚ ᱨᱮ ᱫᱟ ᱦᱚᱭ ᱨᱮ ᱧᱟᱢᱚᱜᱚᱜ ᱠᱟᱱᱟ ᱾ ᱪᱮᱛᱟᱱ ᱦᱚᱭ ᱨᱮ ᱱᱚᱶᱟ ᱨᱮᱱᱟᱜ ᱢᱚᱛᱨᱚ ᱟᱱᱟ ᱠᱷᱚᱱ ᱦᱚᱸ ᱵᱟᱹᱲᱛᱤ ᱛᱟᱦᱮᱱ ᱠᱟᱱᱟ ᱾ ᱥᱤᱧ ᱪᱟᱸᱫᱚ ᱣᱟᱜ ᱯᱚᱨᱤᱢᱟᱱᱰᱮᱨ ᱨᱮ ᱱᱚᱶᱟ ᱨᱮᱱᱟᱜ ᱵᱟᱹᱲᱛᱤ ᱢᱮᱱᱟᱜᱼᱟ ᱾ ᱫᱷᱟᱹᱨᱛᱤ ᱨᱮ ᱥᱮᱞᱮᱫ ᱫᱚᱥᱟ ᱨᱮ ᱱᱚᱶᱟ ᱫᱟᱜ, ᱫᱟᱨᱮ, ᱡᱤᱭᱟᱞᱤ ᱴᱤᱥᱩ, ᱠᱟᱥᱴᱷ, ᱟᱱᱟᱡᱽ, ᱥᱩᱱᱩᱢ, ᱯᱷᱮᱴᱥ, ᱯᱮᱴᱨᱳᱞᱤᱭᱚᱢ, ᱥᱟᱱᱟᱢ ᱡᱤᱣᱮᱫ ᱢᱮᱴᱟᱨ ᱨᱮ ᱧᱟᱢᱚᱜᱚᱜᱼᱟ ᱾ ᱮᱥᱤᱰ ᱨᱮᱱᱟᱜ ᱱᱚᱶᱟ ᱞᱟᱠᱛᱤᱭᱟᱱ ᱜᱷᱟᱴᱚᱠ ᱠᱚ ᱠᱟᱱᱟ ᱾ ᱵᱮᱥ (Base) ᱟᱨ ᱳᱨᱜᱮᱱᱤᱠ ᱠᱚᱢᱯᱣᱩᱱᱰ ᱨᱮ ᱦᱚᱸ ᱱᱚᱶᱟ ᱧᱟᱢᱚᱜᱚᱜ ᱠᱟᱱᱟ ᱾
ᱨᱤᱭᱮᱠᱥᱚᱱ ᱨᱮᱱᱟᱜ ᱛᱟᱞᱠᱟ
H2 +Cl2 -> 2HCl 2H2 +O2 -> 2H2 O
ᱯᱨᱳᱥᱮᱥ
Hydrogen spectrum test ᱱᱮᱪᱩᱨᱟᱞ ᱜᱮᱥ ᱫᱚ ᱞᱚᱞᱚ ᱟᱨ ᱟᱫᱷᱟᱱ ᱟᱭᱢᱟ ᱜᱟᱱ ᱯᱨᱳᱥᱮᱥ ᱛᱮ ᱪᱟᱞᱟᱜ ᱠᱟᱱ ᱨᱮ ᱦᱟᱭᱰᱨᱳᱡᱟᱱ ᱟᱨ ᱠᱟᱨᱵᱚᱱ ᱢᱳᱱᱳᱟᱹᱠᱥᱟᱭᱤᱰ ᱨᱮᱱᱟᱜ ᱢᱮᱥᱟ ᱧᱟᱢᱚᱜ ᱠᱟᱱᱟ CH4 +H2 O -> CO + 3H2
ᱵᱟᱦᱨᱮ ᱡᱚᱱᱚᱲ
ᱥᱟᱹᱠᱷᱭᱟᱹᱛ
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