How do you write electron configurations?

Chemistry

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[Ar] 4s² 3d⁶.

Electron configuration shows how electrons fill orbitals. Follow: 1) Aufbau principle (fill lowest energy first): 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p... 2) Pauli exclusion (max 2 electrons per orbital, opposite spins). 3) Hund's rule (fill orbitals singly before pairing). Example: Carbon (6 electrons): 1s² 2s² 2p². Iron (26): 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶. Shorthand uses noble gas cores: Fe = [Ar] 4s² 3d⁶.

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Electron configuration shows how electrons fill orbitals. Follow: 1) Aufbau principle (fill lowest energy first): 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p...

How do you write electron configurations?
Chemistry

This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.

ScanSolve AI Answer
Electron configuration shows how electrons fill orbitals. Follow: 1) Aufbau principle (fill lowest energy first): 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p... 2) Pauli exclusion (max 2 electrons per orbital, opposite spins). 3) Hund's rule (fill orbitals singly before pairing). Example: Carbon (6 electrons): 1s² 2s² 2p². Iron (26): 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶. Shorthand uses noble gas cores: Fe = [Ar] 4s² 3d⁶.