What fraction of the mass of the universe is in the form of atoms other than hydrogen and helium?
A) 10%
B) much less than 1%
C) 2%
D) 50%

Name: What fraction of the mass of the universe is in the form of atoms other than hydrogen and helium? A) 10% B) much less than 1% C) 2% D) 50%
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Question

Quizplus · Accepted Answer

The mass of the universe in the form of atoms other than hydrogen and helium is about 2%. Hydrogen and helium make up the vast majority of the universe's mass, with heavier elements constituting a small fraction.

What Fraction of the Mass of the Universe Is in the Form