Electron Configuration

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 is the Aufbau principle?

Back

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

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 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 electron configuration for Neon (Ne)?

Back

1s² 2s² 2p⁶.

Front

How many electrons are in a neutral Magnesium (Mg) atom?

Back

A neutral Magnesium atom has 12 electrons.

Front

What is the significance of the 'n' value in electron configuration?

Back

The 'n' value represents the principal quantum number, indicating the energy level of the electron.

Front

What is the electron configuration for Copper (Cu)?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹.

Front

What is the electron configuration for Chlorine (Cl)?

Back

1s² 2s² 2p⁶ 3s² 3p⁵.

Front

What does the notation '4s²' indicate?

Back

The notation '4s²' indicates that there are 2 electrons in the 4s orbital.