Why VSEPR Theory is not completely theoretically proven?

[Tiny_Explorer]

Why fundamental level of VSEPR Theory is more far away from understanding ?

 

[berkeman]

Can you post links to the reading you have been doing to try to answer your question? Thanks.

 

[Tiny_Explorer]

Can you post links to the reading you have been doing to try to answer your question? Thanks.

It is from the NCERT Chemistry Textbook , it says " The VSEPR Theory is able to predict geometry of a large number of molecules, especially the compounds of p-block elements accurately. It is also quite successful in determining the geometry quite-accurately even when the energy difference between possible structures is very small. The theoretical basis of the VSEPR theory regarding the effects of electron pair repulsions on molecular shapes is not clear and continues to be a subject of doubt and discussion."