Curie Notes 04: Inside the Atom: Electrons, Nuclei and Isotopes
The rays of uranium told me that atoms have an inside. Here we open one: the electron, the nucleus, protons, neutrons, and the isotopes that solved chlorine's odd weight.
Learn electrons, the nucleus, protons and neutrons, read isotope symbols, count particles in ions, and calculate average atomic mass from isotopes.
Marie Curie
November 8, 2026
33 min