Question

Which of the following is best nuclear fuel

• A. thorium 236
• B. plutonium 239
• C. uranium 236
• D. neptunium 239

Answer 1

Answer: (B)

plutonium 239

Answer 2

Plutonium $239$ is the best nuclear fuel used in breeder reactors. A breeder reactor is a nuclear reactor that creates more fissile material than it consumes. It requires an initial charge of fissile material, such as plutonium. So, plutonium is the best nuclear fuel.