The Lewis symbol for helium
Helium is one of the noble gases and contains a full valence shell. Unlike the other noble gases in Group 8, Helium only contains two valence electrons. In the Lewis symbol, the electrons are depicted as two lone pair dots.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Original%20figure%20by%20Sara%20Remsen.%20Licensed%20CC%20BY-SA%204.0."
Sara%20Remsen
CC BY-SA 3.0.