why does MgCl2 and FeCl2 are different?

The compound NCl3 is nitrogen trichloride, but AlCl3 is simply aluminum chloride. Why?

5. You are given a list of binary compounds (only two different elements) and asked to determine the relative melting points. a) Which would have the higher melting point, the binary ionic compounds or the binary covalent compounds? Explain your choice? b) If you have two different ionic compounds, like Bal; and Mgo, which would have the higher melting point and why? c) For those compounds that are covalent, which would you expect to have the higher melting point and why (what would you be looking for – give an example)?

all about crystal structure of NaCl

what holds the atoms together in a crystal of magnesium chloride (MgCl2)?

You are told by your instructor to go to the stock room and find a bottle of the chemical K3Cl.Does such a compound exist? Explain

Which of the following compounds is expected to have the highest melting point? MgO BaS CaCl2 K2O SrSe

CCl4 is a nonpolar molecule, while CHCl3 and CH2Cl2 are polar molecules. Draw the Lewis structures of these three molecules. Explain the observation in polarity of the molecules.

Why does I2 have a lower melting point than KCl?

Draw Lewis structures for CCl 4 and C 2Cl 4. Give the molecular shape around each carbon atom. Explain why the carbon atoms in the two molecules have different shapes.