In simple cases, 2 elements.
A metallic element transfers electrons to a non-metallic element leading to the formation of a positive and a negative ion, which are held together by electrostatic attration e.g. sodium chloride, NaCl.
However, in the case of compounds of polyatomic ions, e.g. sulphate SO42-, nitrate NO3- etc. the number of elements involved would be greater.
Cations donate atoms to form an ionic bond.
Na and Cl, Mg and O
This is an ionic bond.
Ionic bonds are named by combining the names of the two elements involved, with the cation (positive ion) listed first followed by the anion (negative ion). For example, sodium chloride is the name of the compound formed from the ionic bond between sodium (Na+) and chloride (Cl-) ions.
Elements form ionic bonds when they transfer electrons to achieve a stable octet in their outermost energy level. Covalent bonds are formed when elements share electrons to achieve a complete outer energy level. The type of bond formed depends on the electronegativity difference between the atoms involved.
Ionic bond is formed in K2Se
It is a bond formed by the attraction between two oppositely charged ions. --------------------------------------------------------------------------------------------------------------- When atoms of different elements exchange an electron (ie one donates one or more electrons to the other), then an Ionic bond between the atoms is made
Minimum 2 atoms required for the formation of an ionic bond. An ionic bond is a type of chemical bond formed through electrostatic and a attraction between two oppositely charged ions. Ionic bonds are formed between a metal and nonmetal ion. The larger the difference in electronegativity between two atoms, the more ionic the bond. Bonds with partially ionic and partially covalent character are called polar covalent bonds.
These bonds are called ionic bonds. They are formed by electrostatic attractions.
Ionic bond-bond formed by donating or transfer of electrons. Covalent bond-bond formed by sharing of electrons.
This is an ionic bond between metals and nonmetals.
You have to now the VSERP theory. The number of valence electrons determine the polarity of the molecule as well of the electronegativities of the elements involved. The less symmetric the molecule the more polar it is.