Electron Configuration Basics

Front

What is electron configuration?

Back

The distribution of electrons in an atom's orbitals, which determines its chemical properties.

Front

What does the Pauli Exclusion Principle state?

Back

No two electrons in an atom can have the same set of four quantum numbers.

Front

What is the Aufbau Principle?

Back

Electrons occupy the lowest energy orbitals first before filling higher energy orbitals.

Front

How many electrons can the first shell hold?

Back

2 electrons.

Front

How many electrons can the second shell hold?

Back

8 electrons.

Front

What is the maximum number of electrons that an orbital can hold?

Back

2 electrons.

Front

What is the electron configuration for Neon (Ne)?

Back

1s² 2s² 2p⁶.

Front

What is the electron configuration for Chlorine (Cl)?

Back

1s² 2s² 2p⁶ 3s² 3p⁵.

Front

What are the four quantum numbers?

Back

Principal (n), Angular (l), Magnetic (m), Spin (s).

Front

What is the significance of the principal quantum number (n)?

Back

It indicates the main energy level of an electron in an atom.