Helium

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Chemical Symbol:   He
Atomic Number:   2
Atomic Weight:   4.0026
Melting Point:    °C
Boiling Point:   -268.93 °C
Density of Liquid:     120 kg m-3
Electron Configuration:     1s2

Abundance

Amount in average human body (70kg):   

0 mg

Average amount in Earth's crust:    0.008 ppm by mass
Average amount in seawater:   

0.007 µg L-1

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Periodic Table




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This page was last changed on: 02 August 2021.

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