The given information gives us the clue that deuterium and tritium react together. We need to find the balanced nuclear reaction of deuterium and tritium; however, first, let me explain you what deuterium and tritium are.
Deuterium and tritium are two isotopes of hydrogen having atomic mass of 2 and 3 respectively. Deuterium is represented by [tex]^2_1H[/tex], whereas tritium is written as [tex]^3_1H[/tex].
When deuterium and tritium collide together, they form Helium atom, which is written as [tex]^4_2He[/tex], and also release energy (and shoot out one neutron).
Hence, the balanced nuclear reaction will be the following:
[tex]^2_1H + ^3_1H \rightarrow ^4_2He + ^1_0n[/tex]
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