객관식Which of the following is the correct chemical formula for the ionic compound formed between sodium (Na) and sulfur (S)?98views
객관식Which of the following is the correct chemical formula for the ionic compound formed between potassium and oxygen?107views
객관식When naming an ionic compound composed of a metal and a nonmetal, which part of the compound's name is changed to end with '-ide'?147views
객관식In the chemical formula for table salt, NaCl, how many atoms of sodium (Na) are present in one formula unit?166views
객관식When naming ionic compounds, in which situation must you use a Roman numeral in the compound's name?150views