Question

Explain how hydrogen and helium nuclei were first formed in the universe.

Answer 1

Nucleosynthesis is the process through which the universe's hydrogen and helium nuclei were created. Protons and neutrons came together to make deuterium, an isotope of hydrogen. Tritium was created when neutrons and deuterium nuclei interacted. After that, a proton would combine with tritium to create helium nuclei.

Answer 2

Sample Response: Hydrogen and helium nuclei were formed in the universe through a process called nucleosynthesis. Deuterium (a hydrogen isotope) nuclei were formed when protons and neutrons combined. Neutrons combined with deuterium nuclei to form tritium. A proton would then fuse with tritium to form helium nuclei.

Step-by-step explanation:

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