Electron Configuration Practice

What is the electron configuration for potassium?

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

• 1s² 2s¹ 2p⁶ 3s² 3p⁵ 4s¹

• 1s² 2s² 2p⁶ 3s¹

What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵

• 1s²2s²2p⁴

• 1s²2s²2p⁶

• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Identify the Electron Configuration for Aluminum (Al)

• 1s² 2s² 2p⁶ 3s² 3p¹

• 1s² 2s² 2p⁶ 3s² 3p³

• 1s² 2s² 2p⁶ 3s² 4p¹

The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 3
• 6
• 8
• 10

Which electron configuration belongs to Chlorine (Cl)?

• 1s² 2s² 2p⁶ 3s² 3p⁵
• 1s² 2s² 2p⁶ 3s² 3p⁶
• 1s² 2s² 2p⁶ 3s² 3p⁷

What do you start electron configuration with?

• 1s²
• 1d¹⁰
• 1f¹⁴
• 1p⁶

Match the parts of the electron configuration to what it represents.

• element

• 1

• period

• 2

• block

• s

Finish the electron configuration for chlorine:

1s² 2s² ___ 3s² 3p⁶

Match the group to the configuration that it ends with.

• alkali metals

• s¹

• alkaline earth metals

• p⁵

• halogens

• p⁶

• noble gases

• s²

What is the missing piece?

1s² 2s² ___ 3s¹

• 2p⁶

• 2p⁴

• 3p⁶

• 3s²