Neon is a "noble gas," and is chemically inert. Thus, without a lot of chemical trickery, there is no element that naturally reacts with neon.
Fluorine is the most reactive element.
Among neon, argon, and helium, neon is the most reactive because it tends to form compounds with other elements under extreme conditions. Helium and argon are noble gases and are generally unreactive due to their stable electronic configurations.
Fluorine(F2) is the most reactive element, known to react with even Xenon, Krypton, Gold, Platinum, etc.
The noble gases: Helium, neon, etc.
Hydrogen is the most chemically reactive among the elements listed. It readily reacts with other elements to form compounds, while helium, argon, and neon are inert gases and generally do not undergo chemical reactions under normal conditions.
Oh, dude, the most reactive element among those is fluorine. It's like the drama queen of the periodic table, always looking for someone to react with. Oxygen and nitrogen are just chilling, while neon is basically the cool kid who doesn't bother with anyone. So yeah, fluorine takes the crown for being the most reactive in that group.
If by vital you mean most reactive, then the metal francium, Fr, is the most reactive element.
neon is a noble gas that will not react with anything -- any other element except helium is more reactive than neon! With lithium, quite a reactive metal, it is certainly more reactive than neon.
Oxygen and chlorine would be the most chemically reactive, as they readily form compounds with other elements. Argon and neon are inert gases, meaning they are stable and do not readily react with other substances.
Neon is the least reactive of the three elements—fluorine, neon, and boron. As a noble gas, neon has a complete valence electron shell, making it chemically inert and unlikely to react with other elements. In contrast, fluorine is highly reactive due to its tendency to gain an electron, while boron can react under certain conditions but is less reactive than fluorine.
Fluorine
Potassium is most reactive with the element Oxygen. However, it should be noted that it is most reactive with a non-element: Water.