This occurs in metals and is when electrons are given out from the metal atoms to make a "sea" of free electrons in between all of the metal atoms. These free electrons hold the metal as a mass together. This is known as being a giant structure.
Ionic Bonding
This occurs typically between a metal and a non-metal (from groups 1 + 2 and 6 + 7 on the periodic table). The metal atom loses electrons which are taken by the non-metal. Therefore, the metal ion produced has a positive charge and the non-metal ion is negatively charged.
- Sodium (metal - group 1) + Chlorine (non-metal - group 7) ----> Sodium Chloride (NaCl)
In the example below, the sodium atom has lost an electron to form a positive ion. The chlorine atom has gained the electron lost from the sodium to form a negative ion. The NaCl molecules are arranged in a giant structure to form the substance more commonly known as Salt.
Covalent Bonding
This is when electrons are shared between atoms. Covalent bonding occurs between non-metals due to the fact that all of the atoms need to gain electrons, so they have to share.
Common substances that covalent bonding occurs in: Water (H2O), Hydrogen gas (H2), and Methane (CH4)
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