Of the 8 causes of Trench mouth that we have listed, we have the following prevalence/incidence information: 1  1 causes are very common diseases. 2  0 causes are common diseases. 3  0 causes are uncommon diseases.  0 causes are rare 1  diseases. 0 causes are very rare diseases.  7 causes have no prevalence information.
An Ionic compound consists of a bond between a metal and a nonmetal element. So the answer would be ..... Ionic compounds are usually formed when a metal reacts with a nonmetal. So the answers would be c. and d. because lithium is a metal, chlorines a nonmetal , sodiums a metal iodines a nonmetal.
Notice that the properties of ionic compounds relate to how strongly the positive and negative ions attract each other in an ionic bond. 1  Ionic compounds form crystals. 2  Ionic compounds form crystal lattices rather than amorphous solids.