Which one of the following statements explains the Aufbau Principal? (4 Points)

The electron must have a unique set of four quantum numbers.

The orbital can only contain two elecrons.

Electrons in atoms fill the lowest energy available atomic orbital.

The most stable electron configuration is the one that has the least number of electrons.

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i  

the answer is barium and copper bromide