The bonding in the pure second-row
elements is shown across the top of this page. The next chapter
will be concerned with covalent bonds between atoms of similar electronegativities.
Chapter 5 will be devoted to ionic bonds between atoms of quite
The second electron shell is not the end of the road for atom building.
In Chapter 6 we will see a third
electron shell, again capable of holding eight outer electrons.
Elements of atomic number 11 through 18 show chemical properties
very similar to elements 3 through 10. This is because these two
sets of elements have corresponding numbers of outer electrons.
It is these outer electrons that react with other atoms, thus giving
each atom its distinctive chemical properties.