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Inorganic Chemistry

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20 Sep 2008 20:37:06 IST

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y is bond angle in PH3 molecule lesser than that in NH3 molecule?...plz tell mmeee...fast.

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y is bond angle in PH3 molecule lesser than that in NH3 molecule?...plz tell mmeee...fast.

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Sahil Gupta

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Joined: 10 Jun 2007

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20 Sep 2008 20:44:00 IST

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according to VSEPR theory, more electronegative the central atom is, more will it attract the bond pair electrons towards itself. since N is more electronegative that P the bond pair- bond pair repulsion will be more in NH3 and so is the bond angle.

Punita Shrivastava

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Joined: 11 Sep 2008

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20 Sep 2008 20:44:13 IST

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its bcz electronegetivity of N is more .so it attracts the bonded pair of electrons towards itself.....now wen the electrons come closer..due to the bond pair bond pair repulsion,the bond angle is increased..........
while electronegetivity of P is comparitively less so it does not attracts the bonded pair of el;ectons towards itself...........

remember ..electronegetivity of central atom is directly proportional to bond angle

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