it is caesium.
less reactive.beacuse group-1 elements are the most reactive elements.
yes the most chemically reactive elements are in group 1
The elements in group 1 become more reactive as you go down the group.
Group 1 elements are the most reactive among metals, followed by group 2 elements.
The most reactive goup in the metals is the Alkali metals (Group I) The most reactive non-metal group is Group 17 or VIIA) the Halogens. It is difficult to say which of the two groups is more reactive. Chemists will say that Flourine is the most reactive element. Note that Group 18 is the least reactive, most stable.
Group 1 elements are more reactive than that of group 2 elements.
Group 1 (for metals) and group 17 (for non metals).
The halogens (group 9) and the earth metals (group 1)
The alkali and alkaline earth metals are the least electro negative elements, and the halogens are the most electro negative elements.
The group containing the most reactive elements is Group 1, also known as the alkali metals. These elements include lithium, sodium, and potassium, which are highly reactive due to their low ionization energies and tendency to lose electrons to form positive ions.
Group 1 and 17. The most reactive elements are fluorine and francium.
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.