Which of the following is the process that happens when two deuterium nuclei join to form Helium nuclei?

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Nuclear fusion

Nuclear fission

Decomposition Reaction

Combination Reaction

answer is A.

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Detailed Solution

Nuclear fusion is the process that happens when two deuterium nuclei join to form Helium nuclei.
Nuclear fusion is a reaction through which two or more light nuclei collide to form a heavier nucleus. The fusion process occurs in elements with low atomic numbers, like hydrogen. Fusion is the opposite of nuclear fission, during which heavy elements diffuse and form lighter elements.
A pair of deuterium atoms combine to form helium-3 and a high-energy neutron. Along with this process, a tremendous amount of energy is released, which is utilized for useful work. Nuclear fusion of hydrogen to form helium occurs naturally in the sun and other stars. However, it takes place only at extremely high temperatures.

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