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Product Description
After hydrogen and helium, the most abundant element in the universe is oxygen. Oxygen produces strong emission lines in the spectra of many galaxies and nebulae, and astronomers use these lines to trace their chemical enrichment. Wear your own oxygen atom, complete with 8 protons and 8 neutrons in the nucleus and two shells of electrons.
There are two sizes of this model, and this is the larger one.
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