The phenomenon by which two light atomic nuclear combine to form a heavy nuclide with the release of energy is known as
Answer Details
The phenomenon by which two light atomic nuclei combine to form a heavier nucleus with the release of energy is called nuclear fusion.
In nuclear fusion, the nuclei of two atoms come together to form a single, heavier nucleus. This process releases a large amount of energy in the form of light and heat.
Nuclear fusion is the process that powers the sun and other stars. Scientists are trying to harness this process as a source of energy on Earth, but it is very difficult to achieve because it requires very high temperatures and pressures to overcome the repulsion between the positively charged nuclei.