Which one of the following molecules is polar? PBr5 CCl4 BrF5 XeF2 XeF4

Question

Which one of the following molecules is polar? PBr5  CCl4  BrF5  XeF2 XeF4

anonymous · Answer

Have you tried drawing out the electron dot diagram for them?

anonymous · Answer

PBr5 is polar. 
CCl4 is nonpolar

anonymous · Answer

If you draw them out and they have lone pairs then that means that they are polar.

anonymous · Answer

The answer is BrF5, but i don;t know why

anonymous · Answer

BrF5  XeF2 XeF4 they all have lone pairs in central atom, why BrF5  is polar while the rest are not?

goformit100 · Answer

@musiclover777 is correct

anonymous · Answer

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the first 2 the dipole charges cancel each other out, resulting in a non-polar molecule
the last one it's impossible to balance the dipoles with 5 Fs, resulting in a polar molecule