As the universe cooled,it eventually reached a temperature of 3,000 K and protons were able to capture and hold electrons to form neutral hydrogen.What is this process called?

Question

Quizplus · Accepted Answer

The process described is called recombination, as it involves the capture of electrons by protons to form neutral hydrogen. Option A, ionization, refers to the process of stripping an electron from an atom, which is the opposite of recombination. Option B, isotropy, refers to the principle that the universe looks the same in all directions. Option C, annihilation, refers to the process of particles and their corresponding antiparticles combining and annihilating each other.

As the Universe Cooled,it Eventually Reached a Temperature of 3,000