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Which of these elements reacts rapidly when dropped in water: rubidium (Rb), magnesium (Mg), cobalt (Co), argon (Ar), or cadmium (Cd)?
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Which of these elements reacts rapidly when dropped in water: rubidium (Rb), magnesium (Mg), cobalt (Co), argon (Ar), or cadmium (Cd)?

User Nikpod
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3 votes

Answer:

rubidium

Step-by-step explanation:

User Aramil Rey
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Rubidium it's one of the most reactive elements, when dropped in water, like all alkali metals, it catches fire and/or explodes (minorly, unless a large amount)

User Zach Mast
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