Unit 3 – Electron Configurations Part F: Electron Configurations II

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Presentation transcript:

Unit 3 – Electron Configurations Part F: Electron Configurations II Dr. Chin Chu River Dell Regional High School

1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 6f 7s 7p 7d 7f

RULES TO REMEMBER: Electron occupies the lowest energy orbital that can receive it. Always start with 1s. [Aufbau Principle] Any given orbital can hold a maximum of 2 e-.[Pauli Exclusion Principle] Orbitals of equal energy are each occupied by one electron spinning in opposite directions before any orbital is occupied by a second electron. [Hund’s Rule]

Increasing energy 1s 2s 3s 4s 5s 6s 7s 2p 3p 4p 5p 6p 3d 4d 5d 7p 6d 4f 5f 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 6f 7s 7p 7d 7f

Increasing energy 1s 2s 3s 4s 5s 6s 7s 2p 3p 4p 5p 6p 3d 4d 5d 7p 6d 4f 5f 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 6f 7s 7p 7d 7f