Question #c8893
1 Answer
Jun 8, 2015
Electron configuration is the arrangement of electrons in a given atom.
Explanation:
The electrons are placed in the available shells according to the following rules:
- electrons enter and fill the first shell,then the second etc.
- Each shell can hold a maximum number of electrons:
*the first shell has a maximum of 2 electrons - the second shell has a maximum of 8
*the third shell has a maximum of 18, however for the atoms of the
first 20 elements the maximum is 8
