Electron configuration

Front

What is electron configuration?

Back

The distribution of electrons in an atom's orbitals, indicating the energy levels and sublevels occupied by electrons.

Front

What is the electron configuration for Aluminum (Al)?

Back

1s² 2s² 2p⁶ 3s² 3p¹

Front

Which orbital is filled first in electron configuration?

Back

The 1s orbital is filled first, followed by 2s, 2p, 3s, and so on, following the Aufbau principle.

Front

What is the electron configuration for Nitrogen (N)?

Back

1s² 2s² 2p³

Front

What is the electron configuration for Chlorine (Cl)?

Back

1s² 2s² 2p⁶ 3s² 3p⁵

Front

What is the significance of the Aufbau principle?

Back

It states that electrons occupy the lowest energy orbitals first before filling higher energy levels.

Front

What is Hund's rule?

Back

Electrons will fill degenerate orbitals (orbitals of the same energy) singly before pairing up.

Front

What is the electron configuration for Zinc (Zn)?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

Front

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

Back

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

Front

What is the electron configuration for Oxygen (O)?

Back

1s² 2s² 2p⁴