Is BeCl2 Polar or Nonpolar?

Answer: BeCl2 is a nonpolar molecule since the linearly arranged chlorine's balance out around the central beryllium atom. This means that there is no permanent dipole within the structure.

Due to the presence of an incomplete octet on the Beryllium (there is not a full octet around central atom, Be has a larger region of positive and negative partial charges. As a result BeCl2 forms an incredibly strong lattice structure that creates an incredibly strong crystalline molecule. As a result Beryllium Chloride has a melting point of 399°C and boiling point of 482°C, much higher than those typically formed by inter-molecular forces. As a result it typically dissolves well in polar solvents.  

BeCl2 Ball and Stick Model
BeCl2 Ball and Stick Model. Created with MolView.
How is BeCl2 utilized in the real world? 

Beryllium chloride derives as mentioned before many of its properties from its incomplete octet. Due to its affinity for electrons it can be utilized as an acid in chemical reactions. It is also often utilized in order to attain pure beryllium for other reactions. However, most molecules involving Be are toxic and must be handled with extreme caution. Therefore, while the molecule doesn't have many practical uses it can often be utilized as a raw resource.