Explanation of VSEPR Theory
Asked by Krishna Kumar · 2 years ago
How does the VSEPR theory help in predicting the shapes of molecules as per the Class 11 NCERT syllabus?
1 Answer
The Valence Shell Electron Pair Repulsion (VSEPR) Theory is used to predict the geometry of molecules based on the repulsion between electron pairs around a central atom. According to the Class 11 NCERT syllabus:
- Lone pairs and bond pairs: Electron pairs around a central atom are classified as either bonding pairs (shared between atoms) or lone pairs (not shared).
- Repulsion strength: Lone pairs repel more strongly than bonding pairs, affecting molecular shape.
- Geometrical arrangements: The theory predicts specific shapes to minimize repulsion, such as linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral.
For example, in a molecule like CH4, there are four bonding pairs and no lone pairs, leading to a tetrahedral geometry to minimize repulsion.
NEET Faculty · 2 years ago
Have the same doubt, or know the answer? Join free to ask and answer NEET questions.
Get Started Free Log in