Electron Configuration REVIEW

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

How many electrons are in the configuration 1s² 2s² 2p⁶?

Back

10 electrons.

Front

What is the electron configuration for potassium (K)?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹.

Front

Complete the electron configuration for chlorine: 1s² 2s² ___ 3s² 3p⁶.

Back

2p⁶.

Front

What is the electron configuration for an oxygen atom?

Back

1s² 2s² 2p⁴.

Front

Identify the electron configuration for aluminum (Al).

Back

1s² 2s² 2p⁶ 3s² 3p¹.

Front

What is the maximum number of electrons that can occupy the 2p sublevel?

Back

6 electrons.

Front

What is 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.