lectrovalent or Ionic Bond: A chemical bond formed between two atoms by the transfer of one or more electrons from a metallic (electropositive) element to a non-metallic (electronegative) element.
Electrovalent or Ionic Compound: A chemical compound formed as a result of the transfer of one or more electrons from an atom of a metallic (electropositive) element to an atom of a non-metallic (electronegative) element.