Question

25 multiple choice 1 point select the most reactive element. na rb k fr

Explanation:

In the alkali - metal group, reactivity increases as you go down the group in the periodic table. Sodium (Na), Rubidium (Rb), Potassium (K), and Francium (Fr) are all alkali metals. Francium is the most electropositive and has the largest atomic radius among them, making it the most reactive.

Answer:

D. Fr