Electron Configurations and Orbital Notations

Front

What is the electron configuration of sodium?

Back

1s² 2s² 2p⁶ 3s¹

Front

What does Hund's rule state?

Back

All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.

Front

What is the electron configuration of chlorine?

Back

1s² 2s² 2p⁶ 3s² 3p⁵

Front

What is the orbital notation for oxygen?

Back

1s² 2s² 2p⁴

Front

What does the Aufbau principle state?

Back

An electron occupies the lowest energy orbital that can receive it.

Front

What is the maximum number of electrons that can occupy an s orbital?

Back

2 electrons.

Front

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

Back

6 electrons.

Front

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

Back

10 electrons.

Front

What is the maximum number of electrons that can occupy an f orbital?

Back

14 electrons.

Front

What is the significance of the principal quantum number?

Back

It indicates the main energy level of an electron in an atom.