Question

Timer Due this Wednesday, Aug 1 at 11:59 pm (PDT) Intermolecular Dipole-Dipole Forces From each pair below, select the molecule that will display stronger Intermolecular dipole-dipole forces in a sample of the pure substance. Consider VSEPR and read Zumdahl "Chemical Principles" Section 13.3 "Bond Polarity and Dipole Moments", also Section 16.1 Dipole-Dipole Forces, and 16.2 The Liquid State 1pts Post Discussion

Pls explain how to do this question. I don’t just want the answer.

Answer 1

Dipole-dipole forces.A dipole is nothing more than a molecule formed by at least two atoms with a large difference in electronegativity (one atom is electropositive and another electronegative) in which an asymmetric distribution of electrons occurs, which have a tendency to be located in the vicinity of the most electronegative atom.

1st Pair: CH2F2 is the one with the highest dipole-dipole strength, because the F atoms are much more electronegative than the H atoms, the carbon atom is the central atom, it fixes an electron inequality towards the atoms of F.

2nd Par: The HCN has more inequality of electronegativities with the carbon atomic core than CO2, since the CO2 counteracts the inequalities mutually ..

3 º Par: The SeF4 has unevenness of electronegativities, since, the SeF6 counteracts the inequalities mutually.

4th Par: The PCl3 has greater intermolecular force, since its inequality of electronegativities is greater, favoring the Cl atoms.