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Why is platinum extremely reactive yet aluminum is not?

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Actually, Aluminum is much more reactive than platinum. In fact, it is so reactive that immediately upon exposure to air, it forms a layer of aluminum oxide on its surface that protects it from any further reaction. read more

Platinum is a very inert metal very close to gold in its reactivity! Aluminum is very much more reactive than platinum, although it does form an adherent oxide layer that greatly slows its corrosion. Aluminum is not only soluble in acids, it is also soluble in bases. read more

No. Platinum is one of the “noble” metals that is known for being highly unreactive. Platinum is so stable that it cannot even be attacked by most acids - only the strongest acid solutions, such as aqua regia (a mixture of anhydrous nitric and hydrochloric acids) can cause it to react. read more

Aluminum is extremely reactive. It is so reactive that a thin film of aluminum oxide forms on the surface almost immediately. This aluminum oxide layer is very adherent and not very reactive. This explains why aluminum is very corrosion resistant and used in aircraft superstructures. read more

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Reactivity Series Worksheet - EdPlace
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