Electron Configuration Basics
Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Barbara White
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
Quantum Mechanics Noun
[kwon-tuhm mi-kan-iks]
Back
Quantum Mechanics
A branch of physics describing the behavior of matter and energy at the subatomic level, essential for understanding electrons.
Example: This diagram shows the quantum model of an atom, where electrons exist in a 'cloud' of probability around the nucleus, not in fixed orbits.
2.
FLASHCARD QUESTION
Front
Bohr Model Noun
[bor mod-l]
Back
Bohr Model
A simplified atomic model that depicts electrons orbiting the nucleus in specific, fixed energy levels or shells.
Example: This diagram shows the Bohr model of an atom, with a central nucleus (protons and neutrons) and electrons orbiting in distinct energy shells.
3.
FLASHCARD QUESTION
Front
Principal Energy Level Noun
[prin-suh-puhl en-er-jee lev-uhl]
Back
Principal Energy Level
The main energy shell of an electron, designated by the number 'n', indicating its average distance from the nucleus.
Example: This diagram shows an atom's electrons arranged in distinct shells, or principal energy levels, with the first level holding 2, the second 8.
4.
FLASHCARD QUESTION
Front
Sublevel Noun
[suhb-lev-uhl]
Back
Sublevel
A subdivision within a principal energy level, containing one or more orbitals and designated by letters s, p, d, or f.
Example: This diagram shows that main electron shells are made of smaller energy sublevels (s, p, d, f), with each sublevel having a specific energy.
5.
FLASHCARD QUESTION
Front
Orbital Noun
[or-bi-tl]
Back
Orbital
A specific region within a sublevel that has a high probability of containing an electron, holding a maximum of two.
Example: An orbital is a 3D region around an atom's nucleus where an electron is likely to be found; they have different shapes, like spheres (s-orbitals).
6.
FLASHCARD QUESTION
Front
Aufbau Principle Noun
[owf-bow prin-suh-puhl]
Back
Aufbau Principle
The rule stating that electrons fill the lowest available energy orbitals before occupying any higher energy orbitals in an atom.
Example: This diagram shows the order in which electrons fill orbitals, starting from the lowest energy level (1s) and following the diagonal path.
7.
FLASHCARD QUESTION
Front
Pauli Exclusion Principle Noun
[paw-lee ik-skloo-zhuhn prin-suh-puhl]
Back
Pauli Exclusion Principle
The principle that an orbital can hold a maximum of two electrons, and those two electrons must have opposite spins.
Example: This diagram shows that when two electrons share an orbital (the box), they must have opposite spins (one arrow up, one down), as shown by the checkmark.
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