Help in Science questiom

• Yuen Theng Chu Noelle추유엔텡

  4 Dec 15, 08:10

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• UltimaOnline

  4 Dec 15, 17:10

  Originally posted by Yuen Theng Chu Noelle추유엔텡:

  Why does scl2 have a lower boiling point than pcl3 despite both having Permanant dipole dipole forces whivh are dominant over Vand der waals forces? Has it some thing to do with the shape of molecule? Scl2 has a bent shape while pcl3 hass a trigonal pyramidal shape but i dont see how the shaoes can affrct their boiling points since both are polar molecules. 

   

   

  Also how to post a new tooic in a normal forum and not in support forum? Causee i onky saw the create new topic in the support forum. Sry guys 

  
  The greater the no. of electrons present, and the larger the molecular size, the greater the polarizability of electron charge clouds, hence the greater the magnitudes of partial charges and dipoles, therefore the stronger the electrostatic attractions, thus the stronger the van der Waals forces.
  
  Regarding "normal" vs "support" forum, you have to ask FireIce this qn (eg. post ur qn in ChitChat forum).