Most of the atoms in the universe are thought to be
A)hydrogen.
B)helium.
C)about equal amounts of hydrogen and helium.
D)iron.
E)elements unknown at present.

Name: Most of the atoms in the universe are thought to be A)hydrogen. B)helium. C)about equal amounts of hydrogen and helium. D)iron. E)elements unknown at present.
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Question

Quizplus · Accepted Answer

Hydrogen is the most abundant element in the universe, making up about 75% of its elemental mass.

Most of the Atoms in the Universe Are Thought to Be