Electronic Configuration

Electronic Configuration

1. In a neutral atom, the number of neutrons is equal to the number of protons (atomic number)

2. However, these electrons are not arranged randomly but in a regular, ordered way.

3. They exist as shells around the nucleus (protons and neutrons) but each shell has a finite capacity.

4. The shell is the same as the number of columns in that row of the periodic table.

5. How to determine the electric configuration in a element.

   • 1. Determine the number of electrons ( equal to atomic number)
   • 2. Identify which row it is in.
   • 3. Identify which column it is in
   • 4. Write the number of electrons in each cell by separated columns.
   • Check the total electrons from 4. Equal the total in 1