Question

complete the fission reaction. 235U + 1 neutron → [X] +141Ba + 3 neutrons Mass Number: Chemical Symbol:

Answer 1

The complete fission reaction when adding 1 neutron to Uranium 235 is:

235U + 1n -> 141Ba + 92Kr + 3n + energy

Therefore the missing element would be the 92Kr (Krypton)

Chemical symbol: Kr

Atomic number: 36

Atomic mass: 92