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2006-11-20 03:04:41 · 2 answers · asked by anitokyomics 2 in Science & Mathematics ➔ Chemistry
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.
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.
2006-11-20 03:32:07 · answer #1 · answered by bellerophon 6 · 2⤊ 0⤋
Shape Of Nf3
2016-11-11 07:21:49 · answer #2 · answered by ? 4 · 0⤊ 0⤋
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The Molecule NF3 and BF3 have different shapes. What are the shapes of these molecules? Why are they different
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2015-08-06 20:55:05 · answer #3 · answered by Vinnie 1 · 0⤊ 0⤋
The electronegative properties of the atoms in each molecule pull on each other. This pull changes for each molecule, determining the shape. That is why molecules have different shapes.
2016-03-25 20:47:40 · answer #4 · answered by ? 4 · 0⤊ 0⤋