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Folen gwruthys gans: '==Arbrov Infobox element== {{infobox element |name=hydrogen |symbol=H |number=1 |abundance= |abundance in earth's crust= |abundance in oceans= |abundance in solar system= |...'
 
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An amendyans diwettha a-dhia 22:11, 9 Kevardhu 2020

Arbrov Infobox element golegi

Skantlyn:Short description

Hydrogen, 1H
 
Hydrogen
Appearance colorless gas
Standard atomic weightSkantlyn:Nobold [[[:Skantlyn:Val]], Skantlyn:Val] conventional: Skantlyn:Val
Mass number H:
Hydrogen in the periodic table
Skantlyn:Periodic table (32 columns, micro)

H

Li
– ← hydrogenhelium
Skantlyn:Nowrap 1
Group 1: H and alkali metals
Period period 1
Block s-block
Element category   H:#x20;>#e8e8e8
Electron configuration 1s1
Electrons per shell 1
Physical properties
Phase Skantlyn:Nobold H: Skantlyn:!((GasSkantlyn:))!
Melting point (H2) 13.99 K ​(−259.16 °C, ​−434.49 °F)
Boiling point (H2) 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)[1]
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
[[Enthalpy of vaporization|Heat of Skantlyn:Engvar]] (H2) 0.904 kJ/mol
Molar heat capacity (H2) 28.836 J/(mol·K)
[[Vapor pressure|Skantlyn:Engvar pressure]]
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 15 20
Atomic properties
Oxidation states Skantlyn:Resize, Skantlyn:Resize (an amphoteric oxide)
Electronegativity Pauling scale: 2.20
[[Ionization energy|Skantlyn:Engvar energies]]
  • 1st: 1312.0 kJ/mol
Covalent radius 31±5 pm
Van der Waals radius 120 pm
 
Color lines in a spectral range
Skantlyn:Strong
Other properties
Natural occurrence H: Primordial-wl>Skantlyn:!((Primordial nuclide|PrimordialSkantlyn:))!
Crystal structurehexagonal
Speed of sound 1310 m/s (gas, 27 °C)
Thermal conductivity 0.1805 W/(m·K)
Magnetic ordering diamagnetic[2]
Magnetic susceptibility −3.98·10−6 cm3/mol (298 K)[3]
CAS Number 12385-13-6
1333-74-0 (H2)
History
Discovery Henry Cavendish[4][5]Skantlyn:Nowrap
Named by Antoine Lavoisier[6]Skantlyn:Nowrap
Main isotopes of hydrogen
Iso­tope Abun­dance Half-life Skantlyn:Nobold Decay mode Pro­duct

Skantlyn:Infobox element/isotopes stable Skantlyn:Infobox element/isotopes stable Skantlyn:Infobox element/isotopes decay

Skantlyn:Category-inline
| references

Skantlyn:Check temperatures

Skantlyn:Check temperatures Skantlyn:Infobox element/element navigation Skantlyn:Template reference list Three of these references are named references. They may be cited in the containing articles as

  • <ref name="Nostrand" /> for the source from Van Nostrand's Encyclopedia
  • <ref name="nbb" /> for the source from Nature's Building Blocks
  • <ref name="Stwertka" /> for the source from A Guide to the Elements
  1. Wiberg, Egon; Wiberg, Nils; Holleman, Arnold Frederick (2001). Inorganic chemistry. Academic Press. p. 240. ISBN 978-0123526519.
  2. Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th ed.). Boca Raton (FL): CRC Press. ISBN 978-0-8493-0486-6.
  3. Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 978-0-8493-0464-4.
  4. "Hydrogen". Van Nostrand's Encyclopedia of Chemistry. Wylie-Interscience. 2005. pp. 797–799. ISBN 978-0-471-61525-5.
  5. Emsley, John (2001). Nature's Building Blocks. Oxford: Oxford University Press. pp. 183–191. ISBN 978-0-19-850341-5.
  6. Stwertka, Albert (1996). A Guide to the Elements. Oxford University Press. pp. 16–21. ISBN 978-0-19-508083-4.