Question 2 of 12 • LVA-Earth and Space Science - FALL
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. What did you include in your response? Check all that apply.A process called nucleosynthesis formed the first hydrogen and helium atoms in the universe.When the protons and neutrons
Answer
A
A process called nucleosynthesis formed the first hydrogen and helium atoms in the universe.
B
When the protons and neutrons combined, hydrogen nuclei were formed.
C
Hydrogen nuclei fused with neutrons, forming nuclei of deuterium.
D
Protons combined with deuterium, forming helium nuclei.