1) 1. What happens to the atomic radius as you move across a period from left to right? a) It stays the same b) It decreases because protons pull electrons closer 2) What happens to the atomic radius as you move down a group in the periodic table? a) It increases because new electron shells are added b) It stays constant 3) Why are larger metal atoms more reactive? a) They don't have enough electrons b) Their outer electrons are farther from the nucleus and easier to lose 4) Which element is more reactive—lithium (Li) or cesium (Cs)? a) Cesium, because its outer electron is farther from the nucleus b) Both have the same reactivity

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