Concept
Version 10
Created by Boundless
Early Models of the Atom
![Illustration of the Helium Atom](../../../../../../../../../figures.boundless-cdn.com/30730/raw/helium-atom-qm.jpg)
Illustration of the Helium Atom
This is an illustration of the helium atom, depicting the nucleus (pink) and the electron cloud distribution (black). The nucleus (upper right) in helium-4 is in reality spherically symmetric and closely resembles the electron cloud, although for more complicated nuclei this is not always the case. The black bar is one angstrom (
Source
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