Which of these pairs of elements is most likely to be a part of a polyatomic ion? k an cl li and br p and o ca and o

Question: which of these pairs of elements is most likely to be a part of a polyatomic ion

k an cl

Explanation: these form when nonmetal and a metal exchange electrons

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(jacemorris04)

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

idk what the question is about