ionic bonding

Ionic Bonding

Today I learned about ionic bonding. Ionic bonding is when two elements are used to form new elements. Ions are an atom or molecule, that is the electric charge of certain compounds or elements. The goal for the electrons is to achieve an equal number of valence like the Noble Gases.

In an element there are two electrons in the first shell, and 8 electrons in the second shell until the final shell.

For example the electric charge of Oxygen:
Oxygen has a valence (last shell) of 6 electrons. So, to make the number of electrons equal like the Noble Gases, it's easier to gain electrons. So, 8-6=2. The charge of oxygen is -2.

Now, there are also other examples of element with positive charges, like sodium.
Sodium's atomic number= 11electrons
Sodium has a valence of= 3 electrons

Since sodium only has a valence of 3 electrons in the outer shell, it's easier to lose electrons, since th goal for the electrons is to achieve an equal number of electrons like the noble gases.
So, sodium has a charge of +3.