Which of the following pairs of molecules have similar geometry?
Correct answer: D. CH4 and SiH4
- A. CO2 and SO2
- B. BF3 nad NH3
- C. MgCI2 and AICI3
- D. CH4 and SiH4
Explanation
The shape of molecules can be predicted by VSEPR theory. According to this theory the shapes or geometry of a molecule or ion depends on the number of shared pairs as well as lone pairs of electrons around the central atom of the molecule or ion which is mainly determined by the repulsive interactions all electrons pairs in the valence shell of central atom.
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About VSEPR Theory
Valence shell electron pair repulsion theory predicts molecular shape by arranging bonding pairs and lone pairs around a central atom to minimize repulsion. Questions cover linear, trigonal planar, tetrahedral, trigonal bipyramidal and octahedral electron geometries, bond angles and distortions caused by lone pairs. Electron geometry is not always the same as molecular shape.
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