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Mazyrski [523]
3 years ago
6

Are BF3 and NF3 symmetric or asymmetric molecules? explain your reasoning

Chemistry
1 answer:
e-lub [12.9K]3 years ago
3 0
The shape of the molecule depends on how many electrons and bonds you have in the outer shell of the central atom. 
For NH3, N is the central atom. It has 3 covalent bonds and a lone pair. Thus the repulsion of the lone pair electrons and the bond electrons will force them to arrange at the corners of a tetrahedral. The molecule will look as a trigonal pyramid (since the lone pair is not "visible" in the structure. 

<span>For BH3, B is the central atom and has no lone pair apart from the three bonds. So the repulsion of the bond electrons will force them to be in a planar trigonal arrangement.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

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