Which of these elements has a smaller atomic #? 1=Copper 2=Lead 3= Potassium 4

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Potassium has a smaller atomic number.

Expert answered|ArslanBasit|Points 650|

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Asked 9/24/2011 5:22:55 AM

Updated 16 days ago|6/28/2026 10:44:10 PM

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This answer has been confirmed as correct and helpful.

Edited by yumdrea [6/28/2026 10:44:06 PM]

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