27 lines
511 B
Plaintext
27 lines
511 B
Plaintext
[Global]
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Number=2
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ShortName=He
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CAS=7440-59-7
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Name=Helium
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Bloc=p
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Family=Noble gas
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Wikipedia=http://en.wikipedia.org/wiki/Helium
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[History]
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Year=1895
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Discoverer=Pierre Jules Cesar Janssen, Joseph Norman Lockyer, Sir Edward Frankland
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Etymology=Greek "helios" for "sun"
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[Values]
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MeltingPoint=0.95
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BoilingPoint=4.216
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Mass=4.002602
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CovalentRadius=28
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VanDerWaalsRadius=120
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ElectronicAffinity=0
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Electronegativity=-1
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ElectronicConf=1s2
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FirstIonistionEnergy=2372.3
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SecondIonisationEnergy=5250.5
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ThirdIonisationEnergy=-1
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