Which of these elements has a smaller atomic #?
1= Silicon
2= Sodium
3=Argon
Sodium has a smaller atomic number.
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Asked 9/21/2011 8:35:43 AM
Updated 188 days ago|1/8/2026 10:07:46 AM
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Edited by
yumdrea [1/8/2026 10:07:44 AM]
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