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Ionic compound
chemical compound involving ionic bonding / From Wikipedia, the free encyclopedia
In chemistry, an ionic compound is a compound made of ions. They have strong ionic bonds between particles. Lots of energy (heat) is required to break the bond apart, resulting in high melting and boiling points. The ions join because they have different charges. Compounds of metals and non-metals are usually ionic. They are made when two or more atoms come close together and an electron goes from one atom to the other atom. The electron does this because both atoms want a full outer shell, similar to those of the noble gases.
More information Group I, Group II ...
Group I | Group II | Group III | Group IV | Group V | Group VI | Group VII | Group VIII | |
---|---|---|---|---|---|---|---|---|
Example Element | Na | Mg | Al | C | N | O | Cl | He |
Charge | 1+ | 2+ | 3+ | See Note 1 | 3- | 2- | 1- | See Note 2 |
Symbol of Ion | Na+ | Mg2+ | Al3+ | See Note 1 | N3- | O2- | Cl- | See Note 2 |
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Note 1: carbon and silicon in Group 4 usually form covalent bonds by sharing electrons.
Note 2: the elements in Group 0 do not react with other elements to form ions