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Apuntes

• Subtopic: Electron Configuration The text appears to be a list of electron configurations for elements in the periodic table, organized by energy levels and sublevels. Each line represents a specific sublevel and the number of electrons it contains. 1. $1s^2$ 2. $2s^2 \, 2p^6$ 3. $3s^2 \, 3p^6 \, 3d^{10}$ 4. $4s^2 \, 4p^6 \, 4d^{10} \, 4f^{14}$ 5. $5s^2 \, 5p^6 \, 5d^{10} \, 5f^{14}$ 6. $6s^2 \, 6p^6 \, 6d^{10} \, 6f^{14}$ 7. $7s^2 \, 7p^6 \, 7d^{10} \, 7f^{14}$ • Subtopic: Noble Gases The following are the noble gases, which are known for having complete electron shells: - He (Helium) - Ne (Neon) - Ar (Argon) - Kr (Krypton) - Xe (Xenon) - Rn (Radon)