Physics

Problem

In an induced fission event a uranium-235 nucleus absorbs a thermal neutron and splits as shown below:

^{235}_{92}\text{U} \; + \; ^{1}_{0}n \;\longrightarrow\; ^{141}_{56}\text{Ba} \; + \; ? \; + \; 3\,^{1}_{0}n

Determine the symbol, mass number, and atomic number of the missing fission fragment.