Question

During the first _____ of the universe's history, atoms could not exist.

a. second

b. 3 minutes

c. 157 hours

d. 45 months

Answer 1

the answer is b 3 seconds

Step-by-step explanation:

Answer 2

None of the above.

By 3 min after the Big Bang, the universe had cooled down for nuclei to form.

It took 380 000 years for the universe to cool down enough that electrons could be trapped in orbits around nuclei and form the first atoms.