• ns (EN = 2.1) is much less electronegative than chlorine (EN = 3.0) so ns is the main atom.

You are watching: Is pcl5 polar or nonpolar molecule

group Valence ElectronsP 5A 1 × 5 e– = 5 e–Cl 7A 5 × 7 e– = 35 e–Total: 40 valence e–

The Lewis structure is:


The electronegativity difference in between P and also Cl is 0.9 therefore the C–Cl bond is nonpolar. Recall that dipole arrows point towards the much more electronegative atom.


The molecule PCl5 is observed no to have a dipole moment. This is because:

A. There room no lone bag of electron on the central atom

B. Together a gas and liquidPCl5 is no a ionic, yet rather the bonds are covalent

C. The polarity the the P-Cl bonds cancel out because of the geometry that the molecule.

D. There are two lone pairs of electron on the central atom, however due come the repulsion, they are on opposite political parties of the central atom and also cancel out.

E. P and Cl room ciose in the periodic table, therefore they have very similar electronegatives, and also as such, the P-Cl bonds room not polar.

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