CP Flashcard - electron configuration and orbital notation

Front

What is electron configuration?

Back

Electron configuration is the distribution of electrons in an atom's orbitals, indicating how many electrons are in each energy level and sublevel.

Front

What does the Aufbau principle state?

Back

The Aufbau principle states that electrons occupy the lowest energy orbitals first before filling higher energy orbitals.

Front

What is the Pauli Exclusion Principle?

Back

The Pauli Exclusion Principle states that no two electrons in an atom can have the same set of four quantum numbers.

Front

What is Hund's Rule?

Back

Hund's Rule states that electrons will fill degenerate orbitals (orbitals of the same energy) singly before pairing up.

Front

What is the electron configuration for sodium (Na)?

Back

1s² 2s² 2p⁶ 3s¹.

Front

What is the electron configuration for nitrogen (N)?

Back

1s² 2s² 2p³.

Front

What is the electron configuration for silicon (Si)?

Back

1s² 2s² 2p⁶ 3s² 3p².

Front

What is the electron configuration for fluorine (F)?

Back

1s² 2s² 2p⁵.

Front

What is the significance of the periodic table in electron configuration?

Back

The periodic table helps predict the electron configuration of elements based on their position, with groups and periods indicating the number of valence electrons and energy levels.

Front

How do you determine the number of valence electrons in an element?

Back

The number of valence electrons can be determined by the group number of the element in the periodic table.