After all the halide ions have the same electron configuration as the noble gases, so they should have similar properties…
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They’re similar in that they’re no longer aggressively attempting to strip electrons from other atoms, but they’re also now electrically charged and will participate in all sorts of ion-exchange reactions.
You’re also trying to handle *just negative ions* which isn’t really possible. They need a charge balance or the tremendous electrostatic repulsion between ions will start to blow stuff up.
Noble gases are unique because they’re highly stable structurally *and* electrically neutral.
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