Bonding GapFill

One type of chemical bonding involves the sharing of electrons between two atoms; this is  convergentcovariantcovalentcovinous bonding. When both of the shared electrons in the bond come from the same atom, it is called a coordinate or  accusativegenitivenominativedative bond, and is represented by an arrow. The tendency of an atom of an element to draw the electrons in a shared bond towards itself is called its   electronegativityelectroattractionelectropositivityelectromagnetism. If the value is very different for the two atoms in a bond, there will be an uneven distribution of electron density, and the bond is said to be   focalaxialmodularpolar.

Some covalent compounds have a giant structure, while others are simple molecules. All molecules experience at least one type of intermolecular interaction:   van der Waalsvan der Broekvan der Heuvelvan der Meer forces. Another type, hydrogen bonding, occurs only in molecules with a hydrogen bonded to a nitrogen, an oxygen or a  fluorinesiliconphosphorussulfur atom. 

In ionic bonding, there is electrostatic attraction between oppositely charged ions arranged in a giant, regular structure called   an arraya latticea matrixa prism. The ions can be monatomic or polyatomic. Polyatomic ions include ammonium (NH  3245  +2+−3+), carbonate (CO  5324  2−−+3−) and sulfate (SO  5463  2−2+−3−).

The positive ions in metals are arranged in the same type of giant, regular structure as the ions in an ionic solid, with metallic bonding arising from the attraction between these ions and   detacheddelocaliseddiscretedispersed electrons.