electron Configuration flashcard practice

Front

What is electron configuration?

Back

Electron configuration is the distribution of electrons in an atom's orbitals, indicating the energy levels and sublevels occupied by 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 singly before pairing up, maximizing the number of unpaired electrons.

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 the electron configuration for Chlorine (Cl)?

Back

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

Front

Which electron configuration describes a transition metal?

Back

An example of a transition metal electron configuration is [Ar] 4s² 3d¹⁰.

Front

What is the electron configuration for an oxygen atom?

Back

The electron configuration for an oxygen atom is 1s² 2s² 2p⁴.

Front

What is the significance of the noble gas notation in electron configurations?

Back

Noble gas notation simplifies electron configurations by using the electron configuration of the nearest noble gas to represent core electrons.

Front

How many electrons can occupy a single orbital?

Back

A single orbital can hold a maximum of two electrons, which must have opposite spins.

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.