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Problem: Which of the following molecules (or ions) has a dipole moment?A.CO2B.two of themC.PF3D.NH4+E.CO32–

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Establish how to determine the dipole moment between to atoms and determine which of the following molecules (or ions) has a dipole moment


Recall that dipole moment refers to the electronegativity difference in a bond/molecule. Dipole moments are usually present with bonds with EN difference higher than 1.5


Calculating the electronegative difference of each molecule:


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Problem Details

Which of the following molecules (or ions) has a dipole moment?

A.CO2

B.two of them

C.PF3

D.NH4+

E.CO32–

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