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![[Post New]](/templates/default/images/icon_minipost_new.gif) 9 Feb 2007 17:59:56 IST
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Q) What is the shape of Ammonia molecule. Why this shape only not any other?
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@seth |
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9 Feb 2007 18:18:03 IST
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Nitrogen is sp3 hybridized in ammonia and the lone pair occupies one of the hybrid orbitals. Due to this the normal sp3 bond angle is decreased to 107 degrees... so its pyramidal..
and since sp3 is the stablest form of hybridization it can take it is sp3 hybridized .. the shape therefore follows...
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9 Feb 2007 18:20:09 IST
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Ammonia hs trigonal pyramidal shape
there is a dipole moment towards N atoms because of the electronegativity of nitrogen ,from H to N i.e n so the shape
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9 Feb 2007 22:53:11 IST
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Hi anurag, Look, Nitrogen atom has 5 valence electrons. Three of these form single bonds with Hydrogen atoms in NH3 . Now we are left with 1 pair of electrons. So due to the repulsions between the bonds and the electron pair results in the tetrahedral structure. It exists in that shape because it is the most stable one.
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10 Feb 2007 16:37:40 IST
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I AGREE TRIDNETHAPPY........
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12 Feb 2007 11:05:38 IST
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ammonia has tetrahedral geometry .but as mentioned by my other friends the bond angle changes to 107 due to the prescence of a lone pair $ due to the higher repulsion offered by it
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the answers given by evryone is right, if u wanna knw more, click on this or u'll find almost evrything for bonding in molecules, n thr shapes n here's one too for u , hopefully u'll get ur doubt cleared
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15 Feb 2007 08:39:21 IST
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all students give right answer.
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Arun / Rashi - Authors Macromind MCQ of Chemistry from G.R Batla |
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15 Feb 2007 20:53:07 IST
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the shape of the ammonia is pyramidal NH3undergoes sp3hybridisation. so the expected shape is tetraderal asin CH4molecule. but due to the presence of lone pair on nitrogen and since lone lone pair repulsions are greater than bond bond pair attractions the bond angle reduces from 109degrees 28minutes to 107degrees30minutes. structure of ammonia . . N H H H THE DOTS REPRESENTS LONE PAIR OF NITROGEN
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pavan kumar |
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