explain how hydrogen and helium nuclei were first formed in the universe.
explain how hydrogen and helium nuclei were first formed in the universe.
Answer
Brief Explanations:
In the early universe, after the Big - Bang, it was extremely hot and dense. As it expanded and cooled, quarks combined to form protons and neutrons. Through a process called Big - Bang nucleosynthesis, protons and neutrons combined to form hydrogen nuclei (a single proton) and helium nuclei (two protons and two neutrons) via nuclear fusion reactions.
Answer:
In the early universe post - Big Bang, as it expanded and cooled, quarks formed protons and neutrons. Big - Bang nucleosynthesis led to the formation of hydrogen (a single proton) and helium (two protons and two neutrons) nuclei through nuclear fusion.