Nobel gases.
Noble gases are least reactive because they have a full shell
8th group-nobel gases
The alkali and alkaline earth metals are the least electro negative elements, and the halogens are the most electro negative elements.
the noble gases are the least reactive(thats group 18) followed by group 14
Group 17, also known as the halogens, consists of the elements fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). In order from least reactive to most reactive, the elements are iodine, bromine, chlorine, and fluorine, with astatine being the least reactive among them. Fluorine is the most reactive halogen due to its high electronegativity and small atomic size.
The least reactive metal in Group 1 of the periodic table is francium. Francium is a highly radioactive and rare element that has very little practical use due to its extreme reactivity with other elements.
The Zinc Family also known as group IIB is the second least reactive I believe. The least reactive family is the one with a full p sublevel, the noble gases, the next least reactive would be the family with a full d sublevel. Since group IIB has a full d sublevel, it must be the next least reactive family.
The noble gases (Group 18) are the least reactive elements in the periodic table because they have a full outer electron shell, making them stable and unlikely to form chemical bonds with other elements.
The elements from the group 12 are not the most reactive chemical elements.
Beryllium is the least reactive in the group 2.
Group 1 elements are more reactive than that of group 2 elements.
less reactive.beacuse group-1 elements are the most reactive elements.