* 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 also 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 trace elements only make up a tiny fraction of the Sun's total mass, but they are still important for understanding how the Sun functions.

It's interesting to note that the Sun's composition is very similar to the composition of the early universe, which was almost entirely hydrogen and helium. This is because the Sun formed from a cloud of gas and dust, which was itself formed from the remnants of earlier stars that had exploded.