Consider the compounds titanium tetrachloride (TiCl₄) and zirconium tetrachloride (ZrCl₄). Zirconium is in the same group as titanium on the periodic table, and both Ti–Cl and Zr–Cl polar covalent bonds are quite strong. TiCl₄ has a melting point of –25°C (i.e., it is a liquid at room temperature). ZrCl₄ has a melting point of 437°C (i.e., it is a solid at room temperature). Based on this information, which diagram goes with which compound? Justify your explanation.

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Keeps going Cl "M Cl CI Cl Cl M Cl Cl (a) Cl "M" Cl (b) Cl Cl. Cl Cl M Cl Keeps going