Ionic Compounds

How do the following two elements bond together?
Cr³⁺  O^2-         

• CrO
• Cr₃O₂
• Cr₂O₃
• CrO₃

PbS₂

• lead sulfide
• lead sulfur
• lead II sulfide
• lead IV sulfide

AgF

• silver fluoride
• silver fluorine
• monosilver monofluoride
• silver monofluorine

When a metal loses electrons, it becomes this type of ion.

• anion
• cation

The proper formula for magnesium hydroxide:

• MgOH
• Mg₂OH
• Mg(OH)₂
• Mg₂OH₂

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

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

Name the following ionic compound: Cr(NO₂)₃

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

How do the following two elements bond together?
Al³⁺  O^2-         

• AlO
• Al₂O₃
• Al₃O₆
• Al₃O₂

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

• LiO
• Li₂O
• LiO₂
• Li₂O₂

Name this compound: 
NH₄F

• Ammonia fluoride
• Ammonium fluorite
• Ammonia fluorate
• Ammonium fluoride