The correct option is (B) (Mo – 8Mp – 9Mn)C2.
Explanation:
Mo – mass of oxygen isotope 8O17.
Mp – mass of proton
Mn – mass of newtron
nuclear binding energy of isotope = Δm ∙ C2 ......(1)
Δm = mass defect
= difference between sum of masses of nucleons and atomic mass
Δm = (Mo) – [Zmp + (A – Z)mn]
Here Z = 8, A – Z = 17 – 8 = 9
∴ ΔM = Mo – (8Mp – 9Mn) = Mo – 8Mp – 9Mn
from (1)
BE = (Mo – 8Mp – 9Mn)C2.