You can refer to the Activity Series of Metals, though the most reactive are Lithium, Potassium, Strontium, Calcium and Sodium.
The most reactive non-metals are the halogens, group 17.
The alkali and alkaline earth metals are the least electro negative elements, and the halogens are the most electro negative elements.
The very reactive elements are typically found in Group 1 (alkali metals) and Group 17 (halogens) of the periodic table. Alkali metals tend to react violently with water, while halogens are known for their high reactivity and tendency to form salts with metals.
Non-reactive elements in the periodic table are typically the noble gases, such as helium, neon, and argon. These elements have a full outer electron shell, making them stable and less likely to form chemical bonds. Reactive elements are those that readily form chemical bonds with other elements, such as the alkali metals (e.g. sodium, potassium) and halogens (e.g. fluorine, chlorine).
The reactive group of all metals consists of elements located in Group 1 and Group 2 of the periodic table, known as the alkali metals and alkaline earth metals, respectively. These metals are highly reactive due to their tendency to lose electrons and form positive ions.
alkali metals
The most reactive metals are the alkali metals in group 1a.
The most reactive non-metals are the halogens, group 17.
fluorine (F)
The elements furthest to the left (alkaline earth metals)
The alkali and alkaline earth metals are the least electro negative elements, and the halogens are the most electro negative elements.
These elements are francium and lithium.
The two most reactive groups of elements in the periodic table are the alkali metals and the halogens. Halogens are nonmetals located in group 17 of the periodic table and include elements like fluorine, chlorine, and iodine.
Alkali metals in the first group compose the most reactive family of metals.
Group 1 (for metals) and group 17 (for non metals).
These metals are called alkaline earth metals.
The alkali metals and the halogens are the most reactive groups and among them, francium and fluorine are the most reactive, especially with each other.