Electron configuration flashcard

Front

What is electron configuration?

Back

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

Front

What does the notation '1s2' represent?

Back

The notation '1s2' indicates that there are 2 electrons in the 1s orbital, which is the lowest energy level.

Front

How many electrons can the s orbital hold?

Back

The s orbital can hold a maximum of 2 electrons.

Front

What is the electron configuration for Helium (He)?

Back

The electron configuration for Helium is 1s².

Front

What is the maximum number of electrons in the p orbital?

Back

The p orbital can hold a maximum of 6 electrons.

Front

What is the electron configuration for Chlorine (Cl)?

Back

The electron configuration for Chlorine is 1s² 2s² 2p⁶ 3s² 3p⁵.

Front

What is the electron configuration for Aluminum (Al)?

Back

The electron configuration for Aluminum is 1s² 2s² 2p⁶ 3s² 3p¹.

Front

What is the significance of the Aufbau principle?

Back

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

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 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.