Which presently observed element or isotope was NOT produced in appreciable amounts in the very early universe shortly after the Big Bang?
A) hydrogen
B) helium-4
C) deuterium
D) carbon
E) helium-3

Question

Quizplus · Accepted Answer

Carbon was not produced in appreciable amounts in the very early universe shortly after the Big Bang. It was mostly formed later through stellar nucleosynthesis processes. Hydrogen, helium-4, deuterium, and helium-3, on the other hand, were produced in significant amounts in the early universe.

Which Presently Observed Element or Isotope Was NOT Produced in Appreciable