<P> Ionic bonding is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds . The ions are atoms that have gained one or more electrons (known as anions, which are negatively charged) and atoms that have lost one or more electrons (known as cations, which are positively charged). This transfer of electrons is known as electrovalence in contrast to covalence . In the simplest case, the cation is a metal atom and the anion is a nonmetal atom, but these ions can be of a more complex nature, e.g. molecular ions like NH or SO . In simpler words, an ionic bond is the transfer of electrons from a metal to a non-metal in order to obtain a full valence shell for both atoms . </P> <P> It is important to recognize that clean ionic bonding--in which one atom or molecule completely share an electron from another--cannot exist: all ionic compounds have some degree of covalent bonding, or electron sharing . Thus, the term "ionic bonding" is given when the ionic character is greater than the covalent character--that is, a bond in which a large electronegativity difference exists between the two atoms, causing the bonding to be more polar (ionic) than in covalent bonding where electrons are shared more equally . Bonds with partially ionic and partially covalent character are called polar covalent bonds . </P>

What kind of element forms cation after ionic bonding
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