Draw a rough sketch of PM vs. T1curves for BF3 and NH3.
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I cannot draw the diagram. I hope the question is related to polarization of the molecule or bond angles among single bonds between atoms in the molecule.
In BF3, since there are no lone pairs of electrons in L shell n=2 , the three bonds B-F are distributed equally in a plane. So net polarization is zero.
In NH3, as per the VSPER theory, there is a lone pair in 1s2 that repels the three N-H bonds formed by 2p electrons in N. These bonds spread out in 3-Dims into a trigonal pyramid. there is a bond angle of 107 degrees about..
I don't understand this PM vs T^-1 curve.. what it means.. Is that polarization vs temperature ?
The temperature will not affect the polarizability of BF3. But it will reduce the polarization of NH3.
In BF3, since there are no lone pairs of electrons in L shell n=2 , the three bonds B-F are distributed equally in a plane. So net polarization is zero.
In NH3, as per the VSPER theory, there is a lone pair in 1s2 that repels the three N-H bonds formed by 2p electrons in N. These bonds spread out in 3-Dims into a trigonal pyramid. there is a bond angle of 107 degrees about..
I don't understand this PM vs T^-1 curve.. what it means.. Is that polarization vs temperature ?
The temperature will not affect the polarizability of BF3. But it will reduce the polarization of NH3.
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