3. Electron Configuration - Shortcut

Front

What is electron configuration?

Back

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 2s² 2p⁶ represent?

Back

It represents the electron configuration of an atom with a total of 10 electrons, filling the 1s, 2s, and 2p orbitals.

Front

How many electrons can the 2p orbital hold?

Back

The 2p orbital can hold a maximum of 6 electrons.

Front

What is the Aufbau principle?

Back

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

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 principle that no two electrons in an atom can have the same set of four quantum numbers, meaning an orbital can hold a maximum of two electrons with opposite spins.

Front

Which orbital has the highest energy: 3p, 4s, 3d, or 3s?

Back

3d has the highest energy among these orbitals.

Front

What is the maximum number of electrons in the n=3 energy level?

Back

The maximum number of electrons in the n=3 energy level is 18.

Front

What is the significance of the superscript in electron configuration?

Back

The superscript indicates the number of electrons in that particular orbital.

Front

What is an orbital diagram?

Back

An orbital diagram is a visual representation of the electron configuration of an atom, showing the distribution of electrons in orbitals.