Everything in your body is built from a few dozen elements. One number tells each element apart: how many protons it has. Pick an element and watch its atom come together. The nucleus sits in the center, and electrons zip around it in shells.
Hydrogen
proton (+)neutronelectron (−)
Hydrogenthe simplest atom
Pick an element (the ones life is built from)
📷 Reference image
A real labeled figure to compare with the interactive above.
Build an Atom — OpenStax, CC BY 3.0 (via Wikimedia Commons)
