Question

What is the minimum amount of energy released in the annhilation?

Answer 1

The minimum total energy released when an electron and its antiparticle (positron) annihilate each other is 2.73 × 10^–22 J. The answer is number 4. The energy released when an electron is added to a neutral atom is called an electron affinity. The minimum energy will release in case of B → B-

Answer 2

The minimum total energy released when an electron and its antiparticle (positron) annihilate each other is 2.73 × 10^–22 J. The answer is number 4. Because an electron has a rest mass equivalent to 0.511 MeV of energy, a minimum gamma-energy of 1.02 MeV is required for this pair production.