When a lithium is bombarded by deuteron, a neutron is observed to emerge and  $B{e}^8$ is formed. Relevant masses in amu are ${[}_0{n}^1=1.00893{,}_{3}L{i}^7=7.01784{,}_1{H}^2=2.01472{,}_{4}B{e}^8=8.00776].$ then

The ‘Q’-value of the reaction is 12.775 MeV

The ‘Q’-value of the reaction is 14.783 MeV

Mass defect in the nuclear reaction is 0.01587 amu

Mass defect in the nuclear reaction is 0.0642 amu