Best Answer<span>: </span>CaO<span> - the </span>attraction between<span> a </span>2<span>+ and a </span>2<span>- </span>ion<span> is </span>much stronger than between<span> a + and a -. Source(s):. Gervald F · 1 ... </span>yeah<span> i </span>think CaO would have<span> the </span>strongest bond<span>, and </span>because<span> of that </span>im guessing<span> that it </span>would have<span> a </span>higher melting point because<span> it </span>has<span> a </span><span>stronger network structure</span>
As lewis structure tells us about the charge on the ions in the lattice So by using it we can predict the balanced lattice of CaO And KF after proceeding we will find that CaO has the Ionic Bond of +2 and -2 which is greater than the ionic bond of KF which is +1 and -1 so greater the charge more the attraction and more the attraction more powerful bond becomes so after all of this we can say that Having higher bond strength leads to the much higher melting and boiling points.
Answer: 25 mph in residential or school districts, 55 mph on rural highways, and 70 mph on rural Interstate highways. Posted speed limits (sometimes called regulatory speed limits) are those that are sign-posted along the road and are enforceable by law.
