Question 1 • TN-Physical Science SC 26-27 (For Credit)
The configuration lists every occupied subshell for potassium: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹. Writing out all the subshells is longhand notation. Noble-gas notation would shorten the first five subshells to [Ar], giving [Ar] 4s¹.
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