Electron Configuration and Orbitals

The video tutorial explains how to write the electron configuration for argon by determining the number of electrons using the atomic number from the periodic table. It guides through the process of filling the 1s, 2s, 2p, 3s, and 3p orbitals to reach a total of 18 electrons, which is the electron count for argon. The tutorial concludes with a summary of the configuration process.

What is the atomic number of argon, and what does it indicate about the atom?

• 18, indicating the number of protons and electrons

• 20, indicating the number of neutrons

• 16, indicating the number of protons only

• 18, indicating the number of neutrons

Which orbital is filled first when writing the electron configuration for argon?

• 2s

• 1s

• 2p

• 3s

How many electrons can the 2s orbital hold?

• 2

• 4

• 6

• 8

What is the maximum number of electrons that the 2p orbital can accommodate?

• 8

• 4

• 2

• 6

After filling the 2p orbital, how many electrons have been accounted for in the argon atom?

• 12

• 14

• 10

• 8

Which orbital is filled after the 2p orbital in the electron configuration of argon?

• 3p

• 3s

• 4s

• 2s

How many electrons are placed in the 3s orbital for argon?

• 4

• 8

• 2

• 6

What is the final electron configuration of argon?

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p⁴

• 1s² 2s² 2p⁶ 3s² 3p⁸

• 1s² 2s² 2p⁶ 3s² 3p²