The reaction between two hydrogen isotopes is shown below:

2H + 3H → 4He + n + energy released

The energy released in this reaction is:

a.equal to that in a fission reaction
b.equal to that in a chemical reaction.
c.less than that in a chemical reaction.
d.greater than that in a chemical reaction.

d.greater than that in a chemical reaction.

To determine the energy released in the given reaction, we need to understand the type of reaction taking place. This reaction involves two isotopes of hydrogen, namely deuterium (2H) and tritium (3H), combining to form helium-4 (4He), a neutron (n), and energy.

The reaction mentioned in the question is a type of nuclear reaction called nuclear fusion. In nuclear fusion, two atomic nuclei combine to form a larger nucleus, releasing a tremendous amount of energy in the process. This is the same reaction that powers the Sun and other stars.

Comparing this reaction to a chemical reaction is not entirely accurate because in a chemical reaction, atoms rearrange their outer electrons to form new combinations, but the atomic nuclei remain unchanged. In nuclear reactions like nuclear fusion, atomic nuclei undergo changes, resulting in the release or absorption of vast amounts of energy.

Therefore, the correct answer is:

d. greater than that in a chemical reaction.

The energy released in nuclear fusion reactions is far greater than that released in typical chemical reactions.

The correct answer is d. greater than that in a chemical reaction.

The reaction shown is a fusion reaction where two hydrogen isotopes, deuterium (2H) and tritium (3H), combine to form helium-4 (4He) and release a neutron (n) along with a significant amount of energy.

Fusion reactions involve the combination of light atomic nuclei to form heavier nuclei, and this process releases a large amount of energy. The energy released in a fusion reaction is much greater than that released in a chemical reaction, as fusion reactions involve the conversion of mass into energy, according to Einstein's mass-energy equivalence principle (E=mc^2).