Electron Configuration and Aufbau Diagram

Flashcard
•
Chemistry
•
12th Grade
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
What is electron configuration?
Back
The distribution of electrons in an atom's orbitals, indicating the energy levels and sublevels occupied by electrons.
2.
FLASHCARD QUESTION
Front
What is the Aufbau principle?
Back
A rule stating that electrons occupy the lowest energy orbitals first before filling higher energy levels.
3.
FLASHCARD QUESTION
Front
What does Hund's rule state?
Back
Electrons will fill degenerate orbitals (orbitals of the same energy) singly before pairing up.
4.
FLASHCARD QUESTION
Front
What is the Pauli Exclusion Principle?
Back
No two electrons in an atom can have the same set of four quantum numbers; thus, an orbital can hold a maximum of two electrons with opposite spins.
5.
FLASHCARD QUESTION
Front
What is a Lewis dot diagram?
Back
A representation of an atom's valence electrons using dots around the element's symbol.
6.
FLASHCARD QUESTION
Front
How many valence electrons does carbon have?
Back
4 valence electrons.
7.
FLASHCARD QUESTION
Front
What is the electron configuration for oxygen?
Back
1s² 2s² 2p⁴.
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