Explanatory notes
… or its compounds 2844.42 ‑ - Actinium-225, actinium-227, californium-253, curium-240, curium-241, curium-242, … neptunium, plutonium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium and … are certain isotopes of transplutonium elements such as californium 252, americium 241, curium 242 and curium 244, …