helium (Q560)

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chemical element with the chemical symbol He and the atomic number of 2
  • He
  • element 2
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Language Label Description Also known as
English
helium
chemical element with the chemical symbol He and the atomic number of 2
  • He
  • element 2

Statements

subclass of
group 18
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period 1
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image
Helium discharge tube.jpg
3,008 × 2,008; 1.29 MB
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named after
Helios
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mass
4.002602±0.000002 atomic mass unit
1 reference
retrieved
4 March 2017
title
Standard Atomic Weights (English)
stated in
International Union of Pure and Applied Chemistry
electronegativity
4.5
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speed of sound
180±1 metre per second
temperature
-268.9±0.1 degree Celsius
phase of matter
liquid
1 reference
stated in
CRC Handbook of Chemistry and Physics (78th edition)
page(s)
14-37
965±1 metre per second
temperature
0±1 degree Celsius
phase of matter
gas
1 reference
stated in
CRC Handbook of Chemistry and Physics (78th edition)
page(s)
14-37
density
0.1785 kilogram per cubic metre
0 references
boiling point
-452.070 degree Fahrenheit
0 references
-268.9 degree Celsius
pressure
1 atmosphere
1 reference
imported from Wikimedia project
French Wikipedia
Commons gallery
Helium
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Commons category
Helium
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Identifiers

NKCR AUT ID
ph503003
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NDL Auth ID
00563132
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E number
E939
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PSH ID
5816
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BnF ID
11978648w
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Quora topic ID
Helium
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JSTOR topic ID
helium
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NE.se ID
helium
0 references
 

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