شرح درس
Principle of distributing electrons
CHEMISTRY - Secondary 2
In This part we will study:
 Aufbau (building-up) principle:
Aufbau (building-up) principle: States that the electrons occupy the sublevels in the order of increasing their energy, the lowest energy sublevel.
 Arrangement of sublevels according to their energy depends on:
Example
Write the electron configuration for the following elements, according to building-up principle:
 11Na
 20Ca
 30Zn

Best wishes to you
Mr.Ahmed Elbasha

كيمياء الصف الثاني الثانوي لغات - الفصل الدراسي الاول
شرح كيمياء لغات تانية ثانوي - مستر احمد الباشا