@Zinnia #63441
Well thank you. I was about to ask everyone to correct me if I was wrong, and bring up my understanding that the sun is just far too hot to support molecules, and so there would be no alloys. Not only am I slightly corrected (I hadn’t considered the pressure forcing di-atomic structures to form despite the top layer of electrons being stripped from the atoms contained therein), but I’m glad you brought up the unique isotope makeup. It probably isn’t precisely unique, but would be different from earth, as more iron is being formed within the sun as fusion occurs.
I’m not sure if our sun has the energy to make much more massive atoms than iron, but I do remember seeing a chart of the energy needed and provided for fusion/fission of the elements, and iron is in the center of the dip. That is, it would require more energy to begin either fusion or fission of iron that could be released in the process, while all heavier elements have the potential to release more energy in fission than required to start it, while all lighter elements can release more energy from fusion than required to start it. As you get closer to iron, the conditions are more extreme to get there, but stars are pretty extreme.
So extreme in fact that early, much larger stars were had had enough mass, enough pressure, and enough already running energy in chain reaction from fusion so much pure hydrogen to begin with, that they forced fusion of those heavier elements once it got beyond iron, to produce everything at least up to uranium. (So far as I know, there has been no natural source found of any elements heavier, but then again, almost all isotopes of heavier elements have very short half-lives. Some could have easily been formed, and has already all decayed through fission to uranium and lighter elements.)
In all of this, though, even when the stars explode and scatter the newly formed elements, they are still strictly atomic, at least for a few thousand years. And only then can they really begin to gather into dust. After the star is completely gone, is mainly the point of this.