A reaction is represented as ^7_3 Li +^1_1 H 2 ,^4_2 He

PHYSICS · Subjective · A Level · Physics · Nuclear physics · Nuclear physics

Problem

A reaction is represented as

^7_3\mathrm{Li}+^1_1\mathrm{H}\rightarrow 2\,^4_2\mathrm{He}.

Given that the calculated Q-value for this reaction is

+17.3\,\text{MeV}

, explain in one or two sentences whether the reaction is exothermic or endothermic and why.