Question

Arrange these metals in decreasing order of their reactivity.
Potassium, sodium, calcium, zinc, gold
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Answer 1

Potassium is more reactive than sodium. Sodium is more reactive than calcium. Zinc is moderately reactive. Gold does not react with water, oxygen, or acids. Therefore, the correct order in decreasing order of their reactivity:
Potassium > sodium > calcium > zinc > gold
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