Electron Configuration

Front

What is electron configuration?

Back

The distribution of electrons in an atom's energy levels and subshells.

Front

How many electrons can the first energy level hold at most?

Back

2

Front

What are valence electrons?

Back

Electrons in the outermost energy level of an atom.

Front

What is the electron configuration for a neutral atom of aluminum (Al)?

Back

1s² 2s² 2p⁶ 3s² 3p¹

Front

How many types of subshells are there?

Back

4 (s, p, d, f)

Front

What is the maximum number of electrons in the second energy level?

Back

8

Front

What is the electron configuration for magnesium (Mg)?

Back

1s² 2s² 2p⁶ 3s²

Front

What is the significance of the Aufbau principle?

Back

Electrons fill the lowest energy orbitals first before moving to higher ones.

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 Hund's Rule?

Back

Electrons will occupy degenerate orbitals singly before pairing up.