Electron Configuration and Atomic Structure

The video tutorial explains how to write the electron configuration for phosphorus. It begins by identifying the number of electrons in a phosphorus atom using the atomic number from the periodic table. The tutorial then guides viewers through the process of filling electron orbitals, starting with the 1s orbital and moving through to the 3p orbital, ensuring the total number of electrons equals 15. The video concludes with a summary of the electron configuration for phosphorus.

What information does the atomic number of phosphorus provide?

• Number of isotopes

• Number of valence electrons

• Number of protons and electrons

• Number of neutrons

How many electrons can the 1s orbital hold?

• One

• Two

• Four

• Six

Which orbital follows the 2s orbital in the electron configuration?

• 3p

• 2p

• 3s

• 1p

How many electrons are placed in the 2p orbital for phosphorus?

• Two

• Four

• Six

• Eight

After filling the 2p orbital, which orbital is filled next?

• 3p

• 3s

• 4s

• 2d

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

• Four

• Three

• Two

• One

How many electrons are placed in the 3p orbital for phosphorus?

• Two

• Three

• Four

• Six

What is the total number of electrons in a phosphorus atom?

• 13

• 15

• 12

• 14