Answer ( 1 )

  1. In a hydrogen bomb, lithium absorbs neutrons from the fission trigger and rapidly splits into helium and tritium (hydrogen-3). The tritium undergoes fusion with deuterium that was combined with the lithium in the construction of the bomb. This is advantageous compared to building the bomb with tritium directly because it is unstable, with a half-life of only 12.6 years, and that would give the bomb a poor shelf-life.

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