Solar system formation...

It doesn't work like that.

When a supernova occurs the shock wave moves out and compresses the gas in front of it like a snow plow through snow. This causes pockets of hydrogen gas to condense further. So out of one supernova you can get hundreds of star births.

Also a star never uses up 100% of its hydrogen. The supernova occurs when the core of the star is saturated with iron! Iron does not fuse like the other atoms do. It strangles the fusion process within the stars core causing it to collapse because it's not contributing to the outward explosive pressure caused by the fusion process.

This starts a chain reaction of collapse until the core pressure builds rebounding with a massive expulsion of its outter layers.

A side note, the surface of our sun is made of iron plasma isotope. Its iron! I know what you must now be thinking..

I thought stars only fuse hydrogen and helium. Why is our star's surface iron and didn't you just say iron causes a supernova?

Yep.

Stars don't just fuse hydrogen and helium. They fuse in sets of twos up until iron. They will continue to fuse atoms until there is too much iron in their cores. Our sun will do the same but it will not blow up in a supernova because it's too small to create the critical density to explode.

Instead the core will be strangled and it will attempt to collapse but when the pressure builds it will just cause our sun to expand to the size of mar's orbit or even bigger. This will cause it to lose density and it will start spitting out rings of gas losing mass until it shrinks tobecome a white dwarf.

Nice job on that answer.

Yes. Good answer.