So I have this idea that a super advanced being travels across the galaxy and is terraforming/xenoforming every planet that CAN be modified for life, not just Carbon based Earthlike lifeforms but different kind of exotic life (alternate biology).It will change most of the planets and bigger moons in our solar system, but in this post I want to ask about our moon.Note that this being i write about is so advanced that getting required energy or materials is not a problem:so don't bother with the "how to do it"explanation.
So again:would a Chlorine atmosphere "work"in the case of our closest satelite?I know that our atmosphere would "escape"from the moon's grasp,but Chlorine is much heavier.
And now let's explain the details: By "Chlorine atmosphere" i mean something like Hydrogen,Oxygen,lots of Chlorine.If you think some other gasses are needed (probably they are)that's all right.
The solvent used will be muriatic acid.
Photosynthesis:muriatic acid combined with carbon dioxide would produce formaldehyde,Oxygen and chlorine.Animals would drink muriatic acid and eat foods filled with CH2O.Lets say they will inhale Oxygen and exhale Carbon Dioxide (feel free to suggest something else).
Looks:Moon would appear very green(organisms could metabolize Chlorine)and have brownish landmass.
I want to add that i edited this question,and my previous version of this post was quite diffrent,hence the answer below (about a silicon-based system).That was great answer,by the way.However,my question needed to be more focused,so it changed drastically,so do not mind the "silicon-based"part.