Question

for metals, as you go down a group, the reactivity_______; as you go across the period, the reactivity ________. decreases; decreases increases; decreases decreases; increases increases; increases rewatch submit

Explanation:

For metals, as you go down a group, the atomic radius increases. The outermost electrons are further from the nucleus and are easier to lose, so reactivity increases. As you go across a period from left to right, the atomic radius decreases. The outermost electrons are closer to the nucleus and are more difficult to lose, so reactivity decreases.

Answer:

Increases; Decreases