https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:atomic-models-and-periodicity/x2613d8165d88df5e:the-quantum-model/v/introduction-to-electron-configurations 2021-05-26T15:51:55Z Introduction to electron configurations Electron configurations describe where electrons are located around the nucleus of an atom. For example, the electron configuration of lithium, 1s²2s¹, tells us that lithium has two electrons in the 1s subshell and one electron in the 2s subshell. Sal Khan video https://cdn.kastatic.org/googleusercontent/7qvxjh_LjGjrWRL3b-2aGr7nmfGbMjeckykwlEfIvMJz9LPmUOTJSsWxrNI-fc58qAHMD2gEoo0Br36E3idGo3vk Introduction to electron configurations Electron configurations describe where electrons are located around the nucleus of an atom. For example, the electron configuration of lithium, 1s²2s¹, tells us that lithium has two electrons in the 1s subshell and one electron in the 2s subshell. https://cdn.kastatic.org/ka-youtube-converted/LyFzELsUgBU.mp4/LyFzELsUgBU.mp4 308 Electron configurations https://www.khanacademy.org/science/strengthened-shs-chemistry-1/x174677b2bfa4bea2:1st-quarter/x174677b2bfa4bea2:electron-configurations/a/electron-configurations-article 2021-04-29T08:00:51Z Electron configurations article article https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:atomic-structure-and-properties/x2eef969c74e0d802:atomic-structure-and-electron-configuration/e/atomic-structure-and-electron-configuration 2025-02-05T10:28:14.374739025Z Atomic structure and electron configuration Check your understanding of atomic structure and electron configuration in this set of free practice questions designed for AP Chemistry students. Lauren Rosebrugh exercise