They bond through extream temperture.
An ionic bond is formed between two atoms by complete transfer of valence electrons from one atom to another atom but a covalent bond is formed between two atoms by the sharing of valence unpaired electrons of both the bonded atoms. An ionic bond is a bond formed between a metal and a non metal. A covalent bond is formed between two non metal atoms.
* If one atom is metal and the other is non-metal, the bond is ionic * If both atoms are non-metal, the bond will be covalent.
Atoms can complete their set of valence electrons by either taking some from another element (ionic bond), or by sharing valence electrons with another element (covalent bond). An ionic bond is usually between a non-metal and a metal, and a covalent bond is usually between two non-metals.
Any atom can bond to one another, providing that they have space for another bond, because of this, atoms like carbon can have up to 4 bonds between other atoms.
Metal atoms do NOT chemically bond with one other, they don't share electrons. This is also true in alloys, being a cristalline mixture of one ore more metallic elements (and some others). For more detail ask metallurgists.
ionic bond
An ionic bond.
The electrons are shared between the atoms. An ionic bond occurs between a metal and a non-metal. The metal donates one or more electrons to the non-metal, causing the metal to have a positive charge. When the non-metal accepts the electrons, it becomes negatively charged, thus resulting in an attraction between the two charged ions, and forming a bond.
Briefly, metals bond via metallic bonding (unless they are part of other molecules, in which case they bond by other means). The positively charged metal atoms are surrounded by a sea of highly mobile electrons, which are not strongly attached to any one particular atom. This arrangement makes metals thermally and electrically conductive, and also allows them to have high malleability and ductility.
Metallic bonding. Sodium ions only bond to each other in sodium metal.
An ionic bond.
electrons