Radon-222 Atomic Structure Diagram | Nuclear Composition & Electron Shells #228703 (License: Personal Use)

The image displays a Bohr-style atomic model of radon-222 (²²²Rn), the heaviest naturally occurring noble gas. Its nucleus is labeled with P: 88 (protons) and N: 138 (neutrons), yielding a mass number of 222; surrounding it are seven electron shells, fully populated to reflect radon’s position in period 6, group 18 of the periodic table. The color-coded layers help distinguish principal energy levels, supporting pedagogical use in nuclear and atomic physics instruction.

Used in educational websites, textbooks, and science outreach materials to explain atomic structure, isotopes, and radioactive noble gases-especially when discussing radon hazards, decay chains, or periodic trends. Matches user intent for learning or teaching atomic models and nuclear composition.