Based on its location on the periodic table, which metal is likely to be less reactive than rubidium and more reactive than calcium?
potassium (k)
cesium (cs)
magnesium (mg)
titanium (ti)

Potassium is the element which is less reactive than rubidium and more reactive than Calcium.

Explanation: Reactivity of an metal is defined as the tendency to loose electrons easily. In a periodic table, the reactivity increases down the group as size of the metal increases. The reactivity decreases across a period as the size of the metal decreases.

Rubidium lies in group 1, which has elements in the series: H, Li, Na, K, Rb, Cs and Fr.

And Calcium lies in period 4 which has elements in the series: K, Ca, (1st transition series), Ga, Ge, As, Se, Br and Kr.

So, the element to have reactivity more than rubidium and less than Calcium must be Potassium (K).

A is the correct answer on edge

Explanation:

A)potassium (K)

the answer is na (sodium)