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Which of these elements is unlikely to have a reaction with any element or compound? rubidium (Rb) magnesium (Mg) cobalt (Co) argon (Ar)

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Answer:

argon

Step-by-step explanation:

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User Potatopotato
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Argon, because it is a noble gas. It has a full outer shell and does not need to react with any other elements to become stable.
User Dror Cohen
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