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The masses of neutron and proton are 1.0...

The masses of neutron and proton are `1.0087` a.m.u. and `1.0073` a.m.u. respectively. If the neutrons and protons combine to form a helium nucleus (alpha particle) of mass `4.0015`a.m.u. The binding energy of the helium nucleus will be `(1 a.m.u. = 931 MeV)`.

A

`28.4 MeV`

B

`20.8 MeV`

C

`27.3 MeV`

D

`14.2 MeV`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) `BE = Delta mc^2`
=`[2(1.0087 + 1.0073) - 4.0015] = 28.4 MeV`.
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