reactivity of Al decreases if it is dipped in HNO3
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Hey mate, here is your answer.
Aluminium has a great affinity towards oxygen. HNO3 is a good oxidising agent . Therefore, a protective covering of insoluble AlO3 is formed making it non reactive. Thus when dipped in nitric acid it occurs passive because of the oxide layer .
Aluminium has a great affinity towards oxygen. HNO3 is a good oxidising agent . Therefore, a protective covering of insoluble AlO3 is formed making it non reactive. Thus when dipped in nitric acid it occurs passive because of the oxide layer .
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aluminum is the correct answer
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