Nuclear fusion produces

Which of the following is the most stable atom?

The measure of binding energy of a nucleus is the

If the binding energy per nucleon of $_1H^2$ is $x$ and that of $_2He^4$ is $7x$,then the ratio of the energy liberated in the reaction $_1H^2 + _1H^2 \to _2He^4$ to the binding energy per nucleon of $_1H^2$ is:

For nuclear fusion reactions, the fusion temperature is of the order of

The reaction $_1H^2 + _1H^3 \to _2He^4 + _0n^1 + \text{energy}$ represents