Question

Acc. to LAW OF CONSERVATION OF MATTER, matter can neither be created or destroyed.... And we all know that the basic element in the universe is Hydrogen (H2)... Thus the question arises that from where did this basic hydrogen atoms come from....????

Answer 1

Soon, quarks combined together to form baryons (protons and neutrons). When the universe was 3 minutes old, it had cooled enough for these protons and neutrons to combine into nuclei. This is known as the time of nucleosynthesis. Hydrogen, helium, lithium, and beryllium were produced.