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What is the alkaline earth metal with the largest atomic number

User Thiebo
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Alkaline earth metals are in the second column from the left of the periodic table. The metal with the largest atomic number is Radium with 88.
User Bjorg P
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Radium, which has an atomic number of 88. The Alkaline earth metals are in the second column of the Periodic Table. Hope this helps! 
User Imgnx
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