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Looking across period 4 of the periodic table, potassium (atomic number 19) is followed by calcium (atomic number 20), which is followed by scandium (atomic number 21). Which element should have the largest
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42 votes
Looking across period 4 of the periodic table, potassium (atomic number 19) is followed by calcium (atomic number 20), which is followed by scandium (atomic number 21). Which element should have the largest atomic radius?

User AleXelton
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24 votes
24 votes
Atomic radius increases as you move left across the periodic table, therefore, potassium will have the largest atomic radius
User Alan Hensel
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