Poly Transition

Ionic Bonding with Polyatomic Ions

What is a Polyatomic Ion?

• Video: Tyler Dewitt: What is a polyatomic ion?
• How to Remember the Polyatomic Ions
• Quizlet: Flashcards of Polyatomic Ions

Formulas with Polyatomic Ions

• Video: Tyler Dewitt: How to Figure Out Ionic Formulas with Polyatomic Ions

Naming Compounds with Polyatomic Ions

• First - write the name of the cation (positive ion)
• Second - write the name of the anion (negative ion)
• Third - The ending
  • IF the anion is polyatomic, then do nothing!
  • IF the anion is NOT a polyatomic ion, then change the ending to -ide
  • Example I: NaNO₂ - Sodium Nitrite
    • Cation: Sodium
    • Anion: Nitrite
    • Ending: The second ion is polyatomic, DON'T change the ending - Sodium Nitrite
  • Example II: NH₄Cl - Ammonium Chloride
    • Cation: Ammonium
    • Anion: Chlorine
    • Ending: The second ion is not polyatomic, change the ending to -ide: Ammonium Chloride

Naming Compounds with Transition Metals

Transition metals have varying oxidation numbers, which means they can form multiple different compounds with the same anion. (ie. FeO and Fe₂O₃) When you name a compound with a transition metal you have to write what its oxidation number is in parenthases between the cation and the anion. The oxidation number is writen as a Roman numeral.

• Example I: FeO Fe⁺² O^-2 : Iron (II) Oxide
• Example II: Fe₂O₃ Fe⁺³ O^-2 : Iron (III) Oxide
• Naming Compounds with Transition Metals Video: https://youtu.be/Rq0A-AHdB74
• Naming Compounds with Transition Metals Practice Problems Video: https://youtu.be/8KSWRy2MMyM

Writing Formulas with Transition Metals: https://youtu.be/H4nfE8gRX7Q