Electron Configuration of Ions

Introduction

• Focus: Understanding the electron configuration of ions (charged atoms)

Electron Configuration of Fluorine

• Neutral Fluorine Atom:
  • Total Electrons: 9
  • Configuration:
    • 1s²
    • 2s²
    • 2p⁵
• Fluoride Ion (F⁻):
  • Gain 1 Electron (total 10 electrons)
  • Configuration:
    • 1s²
    • 2s²
    • 2p⁶

Electron Configuration of Calcium

• Neutral Calcium Atom:
  • Use Noble Gas Configuration
  • Noble Gas Before Calcium: Argon (Ar)
  • Configuration:
    • [Ar]
    • 4s²
• Calcium Ion (Ca²⁺):
  • Lose 2 Electrons (total 18 electrons)
  • Configuration:
    • [Ar]

Practice and Exploration

• Exercise: Try finding electron configurations of other ions (gain or lose electrons)
  • Consider the highest energy electrons for removal or addition

Conclusion

• Think about the changes in electron configurations due to ionization
• Apply concepts to various elements for practice