Which types of baryonic matter are most abundant in the universe? Select two answers

Question

Helium
Oxygen
Nitrogen
Hydrogen
Carbon

Answer 1

The two most abundant types of baryonic matter in the universe are:

1. Hydrogen
2. Helium

Hydrogen is the most abundant element, making up about 74% of the ordinary matter in the universe, while helium comprises about 24%. The other elements, such as carbon, nitrogen, and oxygen, are present in much smaller quantities.