객관식What are the charges on the copper and phosphide ions, respectively, in copper(II) phosphide?151views
객관식Which of the following metals is NOT required to have its charge specified in the names of ionic compounds it forms?118views
객관식Which of the following is the correct chemical formula for the ionic compound formed between iron(III) (Fe^{3+}) and chloride (Cl^{-}) ions?102views