A scientist had to sort the equations below into two groups: nuclear fission and nuclear fusion. 1. $^{{239}}_{{94}}\text{Pu} \rightarrow ^{{112}}_{{46}}\text{Pd} + ^{{124}}_{{48}}\text{Cd} + 3\,^{{1}}_{{0}}\text{n}$ 2. $^{{3}}_{{2}}\text{He} + ^{{3}}_{{2}}\text{He} \rightarrow ^{{4}}_{{2}}\text{He} + ^{{1}}_{{1}}\text{H} + ^{{1}}_{{1}}\text{H}$ 3. $^{{14}}_{{7}}\text{N} + ^{{1}}_{{1}}\text{H} \rightarrow ^{{15}}_{{8}}\text{O}$ 4. $^{{235}}_{{92}}\text{U} \rightarrow ^{{90}}_{{36}}\text{Kr} + ^{{143}}_{{56}}\text{Ba} + 2\,^{{1}}_{{0}}\text{n}$ Which of these equations represent nuclear fission?
- A1 and 2
- B1 and 3
- C1 and 4
- D2 and 4