A giant ionic lattice is a three-dimensional ... dissolved in water the ions are free to move and carry charge. Most ionic compounds are soluble in water None required. Magnesium and chlorine ...

Ionic bonds are very strong so the melting point of an ionic compound is high. Ionic compounds do not conduct electricity in the solid state because their ions are unable to move about.

Here we present experimental evidence that the threshold pressure of ~120 GPa induces in molecular ammonia the process of autoionization to yet experimentally unknown ionic compound—ammonium amide.