Writing Ionic Formulas with Transition Metals

In the name of an ionic compound containing a transition metal, what does a Roman numeral indicate?

• The number of atoms of the transition metal

• The atomic number of the transition metal

• The charge of the transition metal ion

• The group number of the transition metal

What is the chemical formula for Chromium (II) Iodide?

• CrI

• Cr₂I

• CrI₂

• Cr₂I₂

What is the chemical formula for Manganese (III) Oxide?

• MnO

• MnO₃

• Mn₂O₃

• Mn₃O₂

What is the chemical formula for Lead (IV) Nitrate?

• PbNO₃

• Pb(NO₃)₂

• Pb(NO₃)₄

• Pb₄NO₃