This seems like it should be really easy but I've never really understood it for some reason. Is the only way to properly tell what bonding is present by looking at whether the elements are metal and non-metal? I know that non-metals form covalent bonds etc. but I don't know how to figure out what the bonding is from say melting point or something. All I know is ionic compounds are solid at room temperature.
I also don't know how to determine what structure there is and somehow I should know if it is simple or giant or whatever just from looking at the formula.
Would be much appreciated if anyone could help me to understand, thanks.