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

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

The remaining 2% is made up of trace amounts of heavier elements like:

* Oxygen (O)

* Carbon (C)

* Neon (Ne)

* Iron (Fe)

* Silicon (Si)

* Magnesium (Mg)

It's important to note that the Sun's composition isn't uniform throughout. The core, where nuclear fusion occurs, is mostly hydrogen and helium. As you move outward, the proportion of heavier elements gradually increases.