# Binding Energy per Nucleon for Helium Nucleus (2 He) is 7.0 Mev Find Value of Mass Defect for Helium Nucleus - Physics (Theory)

Binding energy per nucleon for helium nucleus (2 He) is 7.0 MeV Find value of mass defect for helium nucleus

#### Solution

BE for ""_2^4"He"0 = 7.0 Me V per nucleon

If Δm is the mass defect, then total BE =  Δm x 931.5 MeV

∴ BE per nucleon = (Δm xx 931.5)/(4) MeV

(Δm xx 931.5)/(4) = 7.0 MeV

Δm = ( 4 xx 7.0 )/931.5 u

Δm = 0.030059 u

Concept: Mass-energy and Nuclear Binding Energy - Nuclear Binding Energy
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