Electron Configuration

Front

What is the Aufbau Principle?

Back

Electrons occupy orbitals of lowest energy first.

Front

How many valence electrons does phosphorus have?

Back

5

Front

What is the maximum number of electrons in a p orbital?

Back

2

Front

Identify the element in Period 5 that has 1 valence electron.

Back

Rubidium (Rb)

Front

How many p orbitals are there in a p sublevel?

Back

3

Front

What is the Pauli Exclusion Principle?

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 fill degenerate orbitals singly before pairing up.

Front

What is the electron configuration of phosphorus?

Back

1s² 2s² 2p⁶ 3s² 3p³

Front

How many total electrons can occupy the third energy level?

Back

18 (2 in s, 6 in p, 10 in d)