Question : In 1957, who redefined a model that predicted the shape of individual molecules based on the extent of electron-pair electrostatic repulsion?
Option 1: Nyholm and Gillespie
Option 2: Heitler and London
Option 3: Staudinger and Perry
Option 4: Marcet and Pauling
Correct Answer: Nyholm and Gillespie
Solution : The correct answer is Nyholm and Gillespie.
In 1957, two chemists, Ronald Gillespie from Canada and Ronald Nyholm from Australia, came up with the VSEPR (Valence Shell Electron Pair Repulsion) theory. This theory provides a new way to predict the shape of individual molecules based on the extent of electrostatic repulsion between electron pairs.
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