Atoms formed approximately 300,000 years after the Big Bang, during a process known as recombination. Initially, only hydrogen atoms were created, as the universe transitioned from a hot, ionized state to a cooler, neutral one. The photon epoch saw the annihilation of most leptons, resulting in a universe predominantly composed of ionic matter until neutral atoms could form. The first stars emerged about a billion years later, further ionizing the surrounding gas.
PREREQUISITESAstronomers, astrophysicists, students of cosmology, and anyone interested in the early universe and atomic formation processes.
Monsterboy said:After the big bang ,how long did it take for atoms to be formed? how long did it take for the elementary/fundamental particles to come together and form atoms?did atoms formed instantly after the big bang? first atoms were hydrogen right?
phinds said:about 3 minutes.
EDIT: by the way, you should learn to use Google; it would have pointed you to not only the answer but some discussion.
Monsterboy said:hmm..you are right about the google part...it's given that recombination happened 300,000 years after the big bang http://en.wikipedia.org/wiki/Chronology_of_the_universe
So during photon epoch almost all the leptons annihilated ,so very few nuclei could capture electrons and become electrically neutral atoms ,then right? so the universe is mostly ionic?
Monsterboy said:So during photon epoch almost all the leptons annihilated ,so very few nuclei could capture electrons and become electrically neutral atoms ,then right? so the universe is mostly ionic?