Discuss the shape of the following molecules using the VSEPR model:
BeCl2, BCl3 , SiCl4, AsF5, H2S, PH3
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Valence shell electron pair repulsion (VSEPR)theory :
It is a model used to predict the 3D geometry of individual molecules from the number of electron pairs surrounding their central atoms. It was developed by Gillespie & Nyholm.The various geometries are as follows according to number of lone pair present:
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Step-by-step explanation:
According to Octet rule, atoms take part in chemical combination to achieve the configuration of nearest noble gas elements. However, some of noble gas elements like Xenon have formed compounds with fluorine and oxygen. For example: XeF2, XeF4 etc.
Therefore, validity of the octet rule has been challenged.
This theory does not account for shape of molecules.
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