Textbook ExpertVerified Tutor
6 Dec 2021
Given information
Cosmic microwave radiation is given.
Step-by-step explanation
Step 1.
Around years after the big bang took place, the hot temperature of the universe would have cooled down at about . At that temperature, the electrons could orbit bare nuclei and can remain there, without being ejected by collisions. Thus stable atoms were able to form.
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