The Sun is a main-sequence star, meaning it's currently fusing hydrogen into helium in its core. While it's predominantly made up of hydrogen and helium, the Sun will produce heavier elements as it ages. Here's a breakdown of what elements the Sun will form at different stages:

Current Stage (Main Sequence):

* Hydrogen (H): The primary fuel source, gradually fusing into helium.

* Helium (He): Produced from hydrogen fusion, increasing in abundance over time.

Red Giant Stage:

* Carbon (C): Formed when helium nuclei fuse together.

* Oxygen (O): Formed from further fusion reactions involving carbon.

Later Stages (Horizontal Branch & Asymptotic Giant Branch):

* Neon (Ne): Produced from carbon fusion.

* Magnesium (Mg): Formed from oxygen fusion.

* Silicon (Si): Formed from neon and magnesium fusion.

Final Stages (White Dwarf):

* Iron (Fe): Formed from silicon fusion, but this process consumes a lot of energy and stops the fusion process.

* Nickel (Ni): Some nickel is formed during the final fusion stages.

Note:

* The Sun is not massive enough to produce elements heavier than iron through fusion.

* While the Sun will form these heavier elements, the majority of its composition will still be hydrogen and helium.

* The process of forming heavier elements is gradual and happens over billions of years.

Additional Points:

* The Sun will eventually shed its outer layers in a planetary nebula, leaving behind a white dwarf composed primarily of carbon and oxygen.

* The heavier elements formed in the Sun will be released into interstellar space, contributing to the chemical enrichment of the universe.

In essence, the Sun will continue to evolve and create heavier elements throughout its life, leaving a legacy of stellar material for future generations of stars and planets.