Fluorine is the most reactive element.
Fluorine(F2) is the most reactive element, known to react with even Xenon, Krypton, Gold, Platinum, etc.
If by vital you mean most reactive, then the metal francium, Fr, is the most reactive element.
I would easily say that Fluorine is the most reactive element in the world. Fluorine is the most electronegative of all elements and will react with all elements. It is so reactive that it cannot be found alone in nature.
Fluorine
The most reactive is fluorine.
Potassium is most reactive with the element Oxygen. However, it should be noted that it is most reactive with a non-element: Water.
The most reactive chemical element is fluorine. Reactivity of the elements increases as we go down and to the left on the periodic table, and it also increases as we go up and to the right on the table.
No, the opposite of that.
Potassium is the most reactive element with oxygen, readily reacting to form potassium oxide.
Fluroine is the most reactive non-metal.
Elements are more reactive as you go down the periodic table and to the left.
Fluorine