* Hydrogen (H): This makes up about 70.6% of the Sun's mass.

* Helium (He): This makes up about 27.4% of the Sun's mass.

While these two gases dominate the Sun's composition, there are trace amounts of other elements present, including:

* Oxygen (O)

* Carbon (C)

* Neon (Ne)

* Iron (Fe)

* Silicon (Si)

* Magnesium (Mg)

* Sulfur (S)

* Nickel (Ni)

* Calcium (Ca)

These heavier elements make up less than 2% of the Sun's mass.

It's important to note that the Sun's composition is not uniform throughout. The core, where nuclear fusion occurs, is denser and has a higher concentration of heavier elements.