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Arrange these materials in decreasing order of their reactivity
Arrange these materials in decreasing order of their reactivity
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Solution
Potassium is more reactive than sodium due to its large size. Sodium is more reactive than calcium because of its outer shell electronic configuration. Zinc is moderately reactive. Gold does not dissolve in any acids and also doesn't form bonds with halogens though being a metal. Therefore, the correct order in decreasing order of their reactivity: Potassium > Sodium > Calcium > Zinc > Gold.
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