The most reactive non-metal is fluorine, and it is also the most reactive element that scientists have discovered. Fluorine combines readily with almost any substance, including metals that are usually stable.
A metal atom's aptitude to lose electrons to other atoms causes it to be more reactive. Involved in the scientifically determined aptitude is the speed at which a metal atom can lose electrons, as well as the substances with which the atom is likely to react.
The most reactive group of metals on the periodic table are the alkali metals. These metals are so reactive that they are not found naturally by themselves; they are found in nature as parts of compounds.
The reactivity of a metal is determined by how tightly the metal holds onto the electrons in its outermost energy level. These electrons are called valence electrons. Metals usually have fewer valence electrons than nonmetals.
The most reactive metal in the periodic table is francium. Francium belongs to the alkali metals, a group on the periodic table whose members are all highly reactive. These metals are highly reactive because they all have only one valence electron.
The most reactive metals found on the periodic table are the alkali metals, which are lithium, sodium, potassium, rubidium, caesium and francium. The alkali metals are found on the periodic table's s-block, because the outermost electron in these elements is in an s-orbital.
Geology.com provides a copy of the Mohs hardness scale, a standard classification chart for the hardness of metal. The chart runs from talc, labeled the softest mineral with a Mohs rating of 1, to diamond, the hardest metal rated at 10 on the Mohs scale, as Geology.com explains
The most reactive metals react with water to form hydrogen gas and their oxides or hydroxides, and with acids to form their oxides or hydroxides. According to the activity series, the first nine metals are highly reactive with water and the next six with acids.
According to Encyclopedia Britannica, silver is one of the least types of chemically reactive elements. Silver is a chemical element, and the metal is a lustrous and white color.
The most reactive element is fluorine. It is never found in its free form in nature. Because it has seven electrons in its outer energy level, fluorine is always on the lookout to find a single electron to give it a more stable configuration.