* Hydrogen (H): About 70.6% of the Sun's mass is hydrogen.

* Helium (He): About 27.4% of the Sun's mass is helium.

These two elements make up the vast majority of the Sun's composition. There are trace amounts of other elements, including:

* Oxygen (O)

* Carbon (C)

* Neon (Ne)

* Iron (Fe)

* Silicon (Si)

* Magnesium (Mg)

* Sulfur (S)

* Nickel (Ni)

* Calcium (Ca)

These heavier elements only make up a small fraction of the Sun's mass, but they are still important for various processes occurring within the Sun, such as nuclear fusion.