Learn about the atom, what it is, the people responsible for helping us understand it, and how it affects us in the world today.The number of valence electrons in an atom of the main group elements is equal to the group number. For example, nitrogen (atomic symbol N, atomic number 7) belongs to group 5A. It therefore has five valence electrons. Its valence shell still anbsp;...
|Title||:||Atomic and Molecular Structure|
|Publisher||:||The Rosen Publishing Group - 2011-01-15|