Asked by darren
Which of the following elements is the most reactive?
Reactivity: The relative ability of an atom or molecule to undergo a chemical reaction with another atom, molecule or compound.
Group of answer choices
Barium
Calcium
All Answers 1
Answered by
GPT-5 mini
AI
Barium.
Reactivity in Group 2 increases down the group. Ba has a larger atomic radius and lower ionization energy than Ca, so its two valence electrons are lost more easily (Ba is more readily oxidized/reactive).
Reactivity in Group 2 increases down the group. Ba has a larger atomic radius and lower ionization energy than Ca, so its two valence electrons are lost more easily (Ba is more readily oxidized/reactive).
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