Fluorine is a halogen, so it reacts with Hydrogen, all of the Alkali Metals and all of the Alkali Earth Metals. There undoubtedly other reactions which I'm not aware of, so please feel free to add to this list if you know of any.
There are few substances that Fluorine will not react with. It can react with any substance with which oxygen can react and even a few more such as glass.
Sodium
Fluorine seems a likely answer
Aluminum and fluorine combine to form the compound aluminum fluoride, AlF3.
a red crystal
In the presence of fluorine (a reactive gas), steel wool will rapidly combine with the fluorine and any oxygen to generate substantial heat, possibly enough to burst into flames.
Sodium Fluoride Sodium fluoride, but if you add oxygen, it becomes Sodium Fluorate.
Fluorine seems a likely answer
radon and fluorine don't combine so nothing happens
Pure fluorine will combine with ANYTHING. Pure fluorine is corrosive, extremely dangerous, and deadly. Don't mess around with it.
Yes, hydrogen and fluorine.
Aluminum and fluorine combine to form the compound aluminum fluoride, AlF3.
Yes, it can combine with fluorine and oxygen, but bot very easily.
NaF, sodium fluoride
Not really. It will combine with oxygen or chlorine / fluorine, but poorly.
Yes. With hydrogen and fluorine.
3 Fluorine atoms are required for 1 aluminum atom.
a red crystal
Mg2F