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Aim: How do chemists represent an atom’s “ electron configuration” ?

Aim: How do chemists represent an atom’s “ electron configuration” ?. Vocabulary: Electron configuration - probable location of electron; the electron’s “address.” Quantum model (wave-mechanical)- electrons have the properties of both particles and waves.

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Aim: How do chemists represent an atom’s “ electron configuration” ?

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  1. Aim: How do chemists represent an atom’s “electron configuration”? Vocabulary: Electron configuration- probable location of electron; the electron’s “address.” Quantum model (wave-mechanical)- electrons have the properties of both particles and waves. Orbital- region of space in which you can expect to find electrons of specific energy.

  2. Aim: How do chemists represent an atom’s “electron configuration”? Rules for writing electron configurations: • Each added electron is placed into the sublevel of lowest available energy. (Aufbauprinciple.) • No more than two electrons can be placed in any orbital. (Pauli exclusion principle.) • A single electron must be placed into an orbital of a given sublevel before any pairing takes place. (Hund’s rule.) • The outermost principal energy level can only contain electrons in “s”and “p” sublevels.

  3. Aim: How do chemists represent an atom’s “electron configuration”?Essential Questions: • Compare and contrast Bohr model with modern quantum model. • Distinguish between orbit and orbital • Write the electron configuration and draw orbital diagram for an atom of aluminum, the element used in fireworks to create a bright white light. • Describe the evolution of atomic theory.

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