In 1957, who redefined a model that predicted the shape of individual molecules based on the extent of electron-pair electrostatic repulsion?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Nyholm and Gillespie.
In 1957, Nyholm and Gillespie redefined the model that predicted the shape of individual molecules based on the extent of electron-pair electrostatic repulsion. Their work led to the development of the Valence Shell Electron Pair Repulsion (VSEPR) theory, which explains molecular geometry by considering the repulsion between electron pairs around a central atom. This model helps in predicting the shapes of molecules and the arrangement of bonds based on minimizing repulsive forces between electron pairs.