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anonymous

  • one year ago

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?

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  1. anonymous
    • one year ago
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    Potassium should have the largest atomic radius because the atomic radius decreases in size from left to right on the periodic table.

  2. Photon336
    • one year ago
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    atomic radius decreases from left to right across a period because of increasing Zeff (pull of protons) so potassium should have the largest atomic radius.

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