Which group on the periodic table would be the most reactive?

Answer 1

Really, the most reactive elements on the Periodic Table tend to be found in the Halogen Group. But the alkali metals are just as reactive. In fact solid sodium will even explode in water!
Group 1 has the most reactive metals and the most reactive non metals are located in group 17.

Answer 2

Orbital theory suggests that the most stable species are those with full outer electron shells. This corresponds to the last column of the periodic table, known as the "noble gases." These species are very stable and accordingly relatively inert to chemical reaction. Many experiments are carried out in vacuum under pure argon gas to avoid oxidation that might occur from atmospheric air because argon is generally unreactive.

From this observation, it follows that the most reactive species will be those directly adjacent to the noble gases on the periodic table since these are just one electron away from the noble gas configuration in the electron shells. Indeed, the halogens (to the left of the noble gases) F, Cl, and Br, and the alkali metals (to the right of the noble gases) H, Li, Na, and K tend to exhibit high reactivity.

This phenomenon can also be explained through the principle of electronegativity. The assignment of electronegativity values is based on the affinity of a nucleus to accepting an electron. As we approach either of the extreme ends of this scale, that is, as species become more electronegative or electropositive, reactivity increases. Low electronegativity, or electropositivity, implies that a nucleus will tend to donate electrons, as we observe in reactions of the alkali metals.

Answer 3

The alkali metals, located in Group 1 of the periodic table, are the most reactive elements. They have one electron in their outermost shell, making them eager to lose this electron in reactions with other elements.

Answer 4

The group in the periodic table that is most chemical reactive is the Alkali Metals.

Answer 5

Alkali metals are the most reactive elements. Don't mistake these for the alkali earth metals because the alkali are not as reactive as the alkali metals.

Answer 6

The alkali metals are more reactive because they react readily with the atmospheric oxygen forming their respective oxides and hydroxides.