posted by chemdummy on .
Is CaCl2 an ionic compound or molecule? plss help. i'm just a little bit confused.
I think most consider this an ionic compound. The electronegativity (EN) for Ca is about 1.0 while Cl is about 3 for a difference of 2.0. A 50% covalent/ionic character is about 1.8 or so; therefore, this is more than 50% ionic character and is considered ionic. In solution it dissolves and forms Ca^2+(aq) and 2Cl^-(aq) easily.