The first elements to form after "Big Bang" were ________.
A)oxygen and hydrogen
B)oxygen and iron
C)hydrogen and iron
D)helium and oxygen
E)helium and hydrogen

Question

Quizplus · Accepted Answer

The first elements to form after the Big Bang were hydrogen and helium, with hydrogen being the most abundant. This is because the universe was extremely hot and dense at the beginning, and the only elements that could form were those with the simplest atomic structure. Oxygen and iron, on the other hand, are heavier elements that require nucleosynthesis in stars to form.

The First Elements to Form After "Big Bang" Were ________