Electrons in Atoms
Flashcard
•
Science
•
9th - 12th Grade
•
Easy
Barbara White
Used 2+ times
FREE Resource
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20 questions
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1.
FLASHCARD QUESTION
Front
Electron Configuration Noun
[uh-lek-tron kon-fig-yuh-rey-shuhn]
Back
Electron Configuration
The specific arrangement and distribution of electrons in various orbitals around the nucleus of an atom.
Example: This diagram shows how electrons are arranged in specific energy levels, called shells, that orbit the central nucleus of an atom.
2.
FLASHCARD QUESTION
Front
Electron Shell Noun
[uh-lek-tron shel]
Back
Electron Shell
A principal energy level surrounding an atom's nucleus, which contains electrons with similar energy.
Example: This diagram shows a model of a Sodium atom. The concentric circles are the electron shells, and the dots on them are the electrons, organized by energy level.
3.
FLASHCARD QUESTION
Front
Subshell Noun
[suhb-shel]
Back
Subshell
A subdivision of a principal energy level, designated by letters s, p, d, and f, containing one or more orbitals.
Example: Subshells are subdivisions of an electron shell. This image shows the three parts of a 'p' subshell, which are dumbbell-shaped regions where electrons are found.
4.
FLASHCARD QUESTION
Front
Orbital Noun
[awr-bi-tl]
Back
Orbital
A specific region within a subshell that can hold a maximum of two electrons with opposite spins.
Example: This image shows the dumbbell shapes of the three different p-orbitals (px, py, pz), which are regions around an atom's nucleus where an electron is likely to be found.
5.
FLASHCARD QUESTION
Front
Electron Spin Noun
[uh-lek-tron spin]
Back
Electron Spin
A quantum mechanical property of an electron, described as either spin-up or spin-down, creating a magnetic field.
Example: This image shows that an electron's spin creates a tiny magnetic field. The two possible spin directions, 'spin up' and 'spin down', produce opposite magnetic poles.
6.
FLASHCARD QUESTION
Front
Aufbau Principle Noun
[ouf-bou prin-suh-puhl]
Back
Aufbau Principle
The principle stating that electrons fill atomic orbitals from the lowest available energy levels before occupying higher levels.
Example: This diagram shows the order for filling electron subshells in an atom, starting from the lowest energy level (1s) and following the path of the arrows.
7.
FLASHCARD QUESTION
Front
Pauli Exclusion Principle Noun
[pou-lee ik-skloo-zhuhn prin-suh-puhl]
Back
Pauli Exclusion Principle
The quantum mechanical principle stating that an atomic orbital can hold a maximum of two electrons with opposite spins.
Example: This diagram shows that when two electrons occupy the same orbital (the box), they must have opposite spins (one arrow up, one arrow down).
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