What practical use does ionization (preferably first) energy

The answer is none?

It allows us to tell if a reaction will be spontaneous or not

>>8449195
thats it? Is first ionization a truely useless study?

>>8449219
No because if a reaction is spontaneous that means it can be ignored because it is not a slow step in a series of reactions and therefore is not a limiting factor if you want to speed up the reaction.

Why do brainlets talk about things they don't understand?

>>8449219
>implying

>>8449328
Yes, why are you speaking of something you couldn't possibly understand.