Here are the essential concepts you must grasp in order to answer the question correctly.
Electron Configuration
Electron configuration describes the distribution of electrons in an atom's orbitals. It follows the Aufbau principle, which states that electrons fill orbitals starting from the lowest energy level to the highest. For sulfur (S), with an atomic number of 16, the electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁴, indicating how electrons are arranged in its orbitals.
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Electron Configuration Example
Orbital Diagrams
Orbital diagrams visually represent the arrangement of electrons in an atom's orbitals. Each orbital can hold a maximum of two electrons with opposite spins, depicted as arrows pointing in opposite directions. For sulfur, the orbital diagram would show the filling of the 1s, 2s, 2p, 3s, and 3p orbitals, illustrating how electrons occupy these spaces.
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Electron Orbital Diagrams
Hund's Rule
Hund's Rule states that electrons will fill degenerate orbitals (orbitals of the same energy) singly before pairing up. This minimizes electron-electron repulsion and stabilizes the atom. In the case of sulfur, the 3p orbitals will each receive one electron before any pairing occurs, leading to a more stable electron configuration.
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