Unit 2 Electron Configurations and Orbital Notation Review

Front

What is the electron configuration of sodium?

Back

1s² 2s² 2p⁶ 3s¹

Front

What does Hund's rule state?

Back

Every orbital in a subshell is singly occupied before any orbital is doubly occupied.

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 the electron configuration of hydrogen?

Back

1s¹

Front

What is the orbital notation for oxygen?

Back

1s² 2s² 2p⁴

Front

What is the electron configuration of fluorine?

Back

1s² 2s² 2p⁵

Front

How many valence electrons does sodium have?

Back

1 valence electron.

Front

What is the significance of the Aufbau principle?

Back

Electrons occupy the lowest energy orbitals first.

Front

What is the maximum number of electrons that can occupy a single orbital?

Back

2 electrons.

Front

What is the shape of the p orbital?

Back

Dumbbell-shaped.