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Potassium and calcium are both in period 4 of the Periodic Table because they both have 4 electrons in their outermost energy level. This means they both have the same number of protons and the same number of electrons, which puts them in the same period. Additionally, they both have the same number of shells, which is why they are both in period 4.

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Ape Corey

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βˆ™ 2023-02-01 14:46:33
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Q: Explain why potassium and calcium are both in period 4?
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