Template:Infobox hydrogen

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Revision as of 22:16, 28 December 2008 by imported>Spacy73 (minor improvement)
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[[Category:Template:Pagetype with short description]]

Hydrogen, 1H
Hydrogen
Appearancecolorless gas
Standard atomic weight Ar, std(H)[[[:Template:Val]], Template:Val] conventional: Template:Val
Hydrogen in the periodic table
Template:Periodic table (32 columns, micro) -

H

Li
(none) ← hydrogenhelium
Atomic number (Z)1
Group1: H and alkali metals
Periodperiod 1
Block  s-block
Electron configuration1s1
Electrons per shell1
Physical properties
Phase at STPgas
Melting point14.01 K ​(−259.14 °C, ​−434.45 °F)
Boiling point20.28 K ​(−252.87 °C, ​−423.17 °F)
Density (at STP)0.08988 g/L
Triple point13.8033 K, ​7.042 kPa
Critical point32.97 K, 1.293 MPa
Heat of fusion(H2) 0.117 kJ/mol
Heat of vaporization(H2) 0.904 kJ/mol
Molar heat capacity(H2)
28.836 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K)         15 20
Atomic properties
Oxidation states−1, +1 (an amphoteric oxide)
ElectronegativityPauling scale: 2.20
Atomic radiusempirical: 25 pm
calculated: 53 pm
Covalent radius37 pm
Van der Waals radius120 pm
Color lines in a spectral range
Spectral lines of hydrogen
Other properties
Natural occurrenceprimordial
Crystal structurehexagonal
Hexagonal crystal structure for hydrogen
Speed of sound(gas, 27 °C) 1310 m/s
Thermal conductivity180.5 m W/(m·K)
CAS Number1333-74-0
Main isotopes of hydrogen
[[Isotope|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]]
1H 99.985% stable
2H 0.015% stable
3H trace 12.32 y β 3He
Category Category: Hydrogen
| references

[[Category:Infobox templates|Template:Remove first word]]

data m.p. cat
in calc from C diff report ref
C 259.14
K 14.01 532.29 -518.28 delta
F 434.45 498.45 -64 delta Template:Subpage other
max precision 2
WD Template:Wikidata Script error: No such module "EditAtWikidata". Template:Wikidata
input C: −259.14, K: 14.01, F: −434.45
comment
data b.p. cat
in calc from C diff report ref
C 252.87
K 20.28 526.02 -505.74 delta
F 423.17 487.17 -64 delta Template:Subpage other
max precision 2
WD Template:Wikidata Script error: No such module "EditAtWikidata". Template:Wikidata
input C: −252.87, K: 20.28, F: −423.17
comment