The average number of prompt neutrons produced per fission of U235 is

More than 5 3 to 5 2 to 3 1 to 2

2 to 3

The average number of neutrons released per fission is denoted by v and has a value of 2.43 for thermal fission in U-235. The average number of neutrons released per fission is different for different fissile isotopes.