Question

If $ M_0 $ is the mass of an oxygen isotope $ _{8}O^{17} $ , $ M_p $ and $ M_n $ are the masses of a proton and a neutron, respectively, the nuclear binding energy of the isotope is

• A. $ \left(M_{O}-8M_{P}\right)c^{2} $
• B. $ \left(M_{O}-8M_{P}-9M_{n}\right)c^{2} $
• C. $ M_Oc^2 $
• D. $ \left(M_{O}-17M_{n}\right)c^{2} $

Answer 1

Answer: (B)

Binding energy
$BE =\left(M_{\text {nucleus}}-M_{\text {nucleons }}\right) c^{2}$
$=\left(M_{O}-8 M_{p}-9 M_{n}\right) c^{2}$