Atomic Radius Part-04🌻Various of Atomic Radii in Periodic Table🌻Why Vander Waals Radius larger🌻

Atomic Radius Part-04🌻Various of Atomic Radii in Periodic Table🌻Why Vander Waals Radius larger🌻
in this video lecture discuss...
1-How do atomic radii vary in a period?,
2-How do atomic radii vary in a Group?
3-Why Vander Waals radius larger than atomic radius?
4-Why nobel gas element have larger radius?
5-Why atomic radius of Oxygen is larger than Nitrogen?