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chemactivity 9 the shell model key y levels or shells. These shells are regions around the nucleus where electrons are most likely to be found, and each shell can hold a certain maximum number of electrons. History and Development The shell model has evolved over decad G Giles Barrows Dec 11, 2025
chemactivity 9 shell model answers is written using numbers and letters, indicating the energy level, subshell, and number of electrons. Example: Carbon (Atomic number 6) electron configuration: 1s² 2s² 2p² Common Shell Model Answers: For sodium (Na, atomic number 11): 2, 8, 1 For chlorine (Cl, atomic number 17): 2, 8, 7 M Ms. Micah Hand Mar 7, 2026
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