The masses of both proton and neutron are approximately 1.67 × 10⁻²⁷ kg. The mass of the helium nucleus (⁴₂He) is about 6.64 × 10⁻²⁷ kg. The energy released in the formation of a helium nucleus from two protons and two neutrons is:
Options:

Correct option is D

Explanation:
We are to find the energy released during the formation of a helium nucleus, which is equal to the mass defect converted into energy using Einstein’s mass-energy relation:

Information Booster:
· This mass defect is a result of the nuclear binding energy.
· The energy released binds the nucleons (protons & neutrons) into a stable nucleus.
· This is the principle behind nuclear fusion (as in the Sun).
Additional Information:
· Options (1) and (3) reflect raw mass values, not energy.
· Option (2) is too large and unrealistic for this scale.
· Only Option (4) represents the correct binding energy calculation.