Why Didn't Elements Heavier Than Helium Form in the First

question 63

Multiple Choice

Why didn't elements heavier than helium form in the first minutes of creation?

• A) The electrons slowed down enough to be captured into orbits by protons.
• B) There was not enough matter in the universe at that time.
• C) When He- 4 was formed, the expansion cooled the cosmos below 100 million K.
• D) The first generation of stars used them up too quickly to observe them.
• E) Only Type I supernovae can produce iron and heavier elements.

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