Writing Formulas for Ionic and Covalent Compounds

The first step in naming an ionic compound is always...

• Naming the anion (non-metal)

• Changing the ending to -ide

• Naming the cation (metal)

• Writing the cation charge

Name the following ionic compound: BeCl₂

• beryllium chlorine
• beryllium II chloride
• beryllium chloride
• beryllium dichloride

What is the correct formula for the compound, lithium oxide?

• LiO
• Li₂O
• LiO₂
• Li₂O₂

Which of the following is NOT an ionic compound?

• CaO

• NaOH

• BaCl₂

• Br₂

What is the formula for manganese(III) oxide?

• MgO
• Mg₂O₃
• MnO
• Mn₂O₃

From the following ionic compounds, choose the name-formula pair that is not correctly matched.

• sodium sulfide  Na₂S
• ammonium nitrate 
  NH₄NO₃
• sodium sulfate 
  Na₂SO₃
• calcium oxide  CaO

Name the following ionic compound: MgSO₄

• magnesium sulfoxide

• magnesium sulfide

• magnesium sulfate

• magnesium oxide

Name the following ionic compound: Cr(NO₂)₃

• chromium nitrite
• chromium nitride
• chromium III nitride
• chromium III nitrite

Which of the following combinations would need roman numerals in the name?

• potassium + fluorine
• beryllium + oxygen
• boron + iodine
• silver + oxygen

When naming ionic compounds with transition metals you need to include roman numerals to show the _____ of the metal..

• atomic number
• mass number
• charge
• ionization energy