Collaborative analysis improves theoretical understanding of hyperfine splitting in hydrogen
An atom of hydrogen is made up of an electron orbiting ... in Switzerland measured the radius of a proton in muonic hydrogen ...
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Atomic structure - OCR Gateway
The typical size of atoms and small molecules is around 1 × 10-10 m (0.1 nm). For example: diameter of a hydrogen atom, H 1.0 × 10-10 m width of a hydrogen molecule, H 2 2.9 × 10-10 m ...