Why does pf3 have dipole dipole internolecular forces? I thought it had dispersion...

Answer 1

I can't draw the Lewis structure on this board but here isw a link that will show you.
https://www.google.com/search?q=lewis+structure+PF3&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a&channel=sb

The molecular structure is here.
https://www.google.com/search?q=molecular+structure+PF3&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a&channel=sb

You can see it is not symmetrical; therefore, it has a dipole moment.

Answer 2

Thanks