Description
🔍 Explore
Build nuclei from protons and neutrons, identify their isotopes, and investigate stability and decay.
🎮 Try It
Add or remove each kind of nucleon and watch the element name, mass number and chart position change. Compare the partial and zoomed charts. In Decay mode, build an unstable nuclide and trigger an available decay.
🎯 Your Mission
Find two isotopes of the same element—one stable and one unstable. Record what stays the same and what changes, then test the unstable isotope’s decay.
🌍 Real-World Connection
Radioisotopes are used in medical scans and cancer treatment.
