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- Mar 7, 2005
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slg47|1300942425|2878721 said:kagordo4|1300930250|2878594 said:dragonfly411|1300888288|2878119 said:Now I want to know why Phosphorus Trichloride is polar.
Chemists?????
Phosphous Trichloride is polar because the three chloride atoms are more electronegative than the Phosphorus. The geometry is trignonal and therefore the dipole moments do not cancel each other.
,,,,,,,,,,Cl
,,,,,,,,,,^
,,,,,,,,,, l
Cl <--- P ---> Cl
Crude Dipole Moment Diagram.
Edited like 8 times because I couldn't figure out how to make the molecule look rightish.
the geometry is trigonal pyramidal (similar to ammonia), so the three chlorine molecules are actually not all in one plane. The combination of electronegativity differences and geometry results in the dipole.
I think it's easier to copy diagramsso here is one from Wikipedia
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