Respuesta :
The S-O bonds' unique dipoles on SO3's trigonal planar structure cancel each other out, leaving the molecule with no dipole moment.
Si's dipole moment is less than that of SF4. Each has a - F with a corresponding + Si and S. S's "see-saw" structure, which is asymmetric, results in an overall dipole.
Because SiF4 is tetrahedral, the individual dipoles on the Si-F bonds cancel each other out, preventing the molecule from having a dipole moment.
What is dipole moment?
A molecule with a slight positive and a slight negative charge is called a dipole. For instance, in the chemical compound HCl, chlorine has a slight negative charge while hydrogen has a slight positive charge. The molecule of HCl has a dipole moment of 1.
The electric dipole moment measures the separation of positive and negative electrical charges inside a system or the overall polarity of the system. The SI unit for the electric dipole moment is coulomb-meter (Cm). The debye is yet another unit of measurement in atomic physics and chemistry (D).
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