Question

What is an electrically neutral compound with positive and negative ions?

Answer 1

ionic compound

Most of the rocks and minerals that make up the Earths crust are composed of positive and negative ions held together by ionic bonding. An ionic compound is an electrically neutral compound consisting of positive and negative ions. You are very familiar with some ionic compounds such as sodium chloride  NaCl . A sodium chloride crystal consists of equal numbers of positive sodium ions  Na +   and negative chloride ions  Cl   .