Metals are elements, such as Iron (an element) and Copper (also an element), and they react for various reasons.
A reactive non metal is an element that can gain the electrons or is more electronegative
Start with a more reactive metal or element and a less reactive metal or element in solution or in contact with each other. The more reactive metal will displace the less reactive metal from its solution or compound, resulting in a new compound containing the more reactive metal and a separate less reactive metal. The displacement reaction follows the activity series of metals, where more reactive metals displace less reactive metals from their compounds.
A reactive non-metal.
If by vital you mean most reactive, then the metal francium, Fr, is the most reactive element.
There are many examples. Ni is a example element.
Fluroine is the most reactive non-metal.
Fluorine is the most reactive non-metal element. It readily gains an electron to achieve a stable electron configuration, making it highly reactive.
No. Potassium metal is to reactive and expensive for everyday use.
fluorine
A more reactive metal pushes out a less reactive metal out of a compound element, eg. CuSo4+Mg=MgSo4+Cu
The most reactive metal is is francium, though cesium is often given this title due to francium's extreme rarity and short half life. The most reactive element is commonly said to be fluorine. But fluorine is a nonmetal.
Potassium is the most reactive. It is in the 1st group. It is an alkaline metal.