neptunium-225 Directory References Discover Water Fluoridation: Just the Facts Falling Stars: 10 of the Most Famous Endangered Species Poker Hands Ranked Spies Like Us: 10 Famous Names in the Espionage Game Timeline of the 2000s 9 Memorials and Monuments in the United States 7 Deadliest Weapons in History Contents neptunium-225 chemical isotope Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:neptunium In neptunium…among the most unstable is neptunium-225, with a half-life of more than 2 microseconds. Neptunium-237 can be separated from used reactor fuel to study the physical and chemical properties of the element.Read More