Question

The binding energy of an $\alpha$ -particle is
(Given that mass of proton$=$$1.0073$ amu, mass of neutron$=$ $1.0087$ amu, and mass of $\alpha$-particle$=$$4.0015$ amu)

• A. $28.4MeV$
• B. $35.6MeV$
• C. $40.3MeV$
• D. $44.7MeV$

Answer 1

Answer: (A)

$28.4MeV$

$\Delta m=(2\times 1.0073+2\times 1.0087-4.0015)$
$=0.00305\mu$
$E=0.0305\times 931.478MeV$
$=28.41MeV$