Answer :
Final answer:
Describing bond formation in O2, defining nuclear energy, and explaining the nuclear reaction in the sun.
Explanation:
Bond Formation in O2 Molecules: Oxygen molecules form covalent bonds where each oxygen atom shares two electrons, resulting in a double bond between the two oxygen atoms.
Nuclear Energy: Nuclear energy is the energy released during nuclear reactions, such as fission or fusion, where the nucleus of an atom is involved.
Nuclear Reaction in the Sun: The primary nuclear reaction in the sun is the fusion of hydrogen nuclei (protons) to form helium, releasing immense amounts of energy in the process.
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