What Was the First Version of the Atmosphere?

The first version of the atmosphere formed when earth formed itself. You had this huge cloud of hydrogen, mostly in a little helium and trace heavier elements. That whole thing got sparkd into a collapse, which led to the formation of the sun. And then the planets gathered together, and all basically came out of the same stuff. So it was a very short lived atmosphere. Everybody stopd breathing for about a hundred years. And then we'll get a new one regular.