1/31/2024 0 Comments Ionic vs covalent![]() ![]() Conduction of Electricity These bonds can conduct electricity. This bond melts at a very low melting point. Boiling point This bond melts at a very high boiling point. This bond melts at a comparatively low melting point. Melting Point This bond melts at a very high melting point. It exists in solid, gas, and liquid, all three states. Nonmetals State It exists only in the solid position. It is a chemical bonding process that takes place between ions having compatibility of sharing electrons. Comparison Table Parameters of Comparison Ionic Covalent Meaning It a chemical bonding process takes place between ions having opposite attraction charge. It does not require attraction between opposite ions but rather a bonding between equally charged ions. By definition, a metal is relatively stable if it loses electrons to form a complete valence shell and becomes positively charged.While on the other side, Covalent bonding occurs between nonmetals precisely. Ionic bonds form when metals and non-metals chemically react. The metals form positively-charged ions and the non-metals form negatively-charged ions. Generally, when metals react with non-metals, electrons are transferred from the metals to the non-metals. When many ions attract each other, they form large, ordered, crystal lattices in which each ion is surrounded by ions of the opposite charge. Electrostatics explains why this happens: opposite charges attract and like charges repel. These oppositely charged ions attract each other to form ionic networks (or lattices). Ionic bonding is the attraction between positively- and negatively-charged ions. Since electrons are negatively charged, an atom that loses one or more electrons will become positively charged an atom that gains one or more electrons becomes negatively charged. Ions form when atoms gain or lose electrons. Cations are positively charged and anions carry a negative charge. Ions are atoms or molecules which are electrically charged. ![]() In this section we will provide brief descriptions of some of the bonding models the more important of these will be treated in much more detail in later parts of this chapter. ![]() Most of them apply only to certain classes of compounds, or attempt to explain only a restricted range of phenomena. Nevertheless, it serves as a tool for developing our understanding of gases, and as a starting point for more elaborate treatments.Given the extraordinary variety of ways in which atoms combine into aggregates, it should come as no surprise that a number of useful bonding models have been developed. Despite its name, this is really a model (at least at the level that beginning students use it) because it does not even try to explain the observed behavior of real gases. An example of a model that you may already know about is the kinetic molecular theory of gases. We do not even require that a model be a credible representation of reality all we ask is that be able to explain the behavior of those cases to which it is applicable in terms that are consistent with the model itself. But whereas a theory can be discredited by a single contradictory case, a model can be useful even if it does not encompass all instances of the phenomena it attempts to explain. A scientific model is something like a theory in that it should be able to explain observed phenomena and to make useful predictions. When we are faced with a scientific problem of this complexity, experience has shown that it is often more useful to concentrate instead on developing models. Moreover, it seems likely that if such a theory does ever come into being, it will be far from simple. Unfortunately, no one theory exists that accomplishes these goals in a satisfactory way for all of the many categories of compounds that are known.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |