Potassium (K): $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{1}$ Identify the core electrons and valence electrons.
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Answer

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Step 1
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Step 2
: Understand the Electron Configuration

The electron configuration for Potassium (K) is $$1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{1}

Final Answer

- Core Electrons: 18 - Valence Electrons: 1