How do I show that the fourth and fifth periodic table consists of 18

1.	How do I show that the fourth and fifth periodic table consists of 18 elements using the quantem mechanical model?
Answer» Answer: PLEASE securing the WAY AMAZING commited to cancel

How do I show that the fourth and fifth periodic table consists of 18 elements using the quantem mechanical model?

Answer»

Answer:

PLEASE securing the WAY AMAZING commited to cancel