• P (EN = 2.1) is much less electronegative than chlorine (EN = 3.0) so P is the central 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 distinction in between P and Cl is 0.9 so the C–Cl bond is nonpolar. Recall that dipole arrows point in the direction of the more electronegative atom.
The molecule PCl5 is oboffered not to have a dipole moment. This is because:
A. There are no lone pairs of electrons on the main atom
B. As a gas and liquidPCl5 is not a ionic, but fairly the bonds are covalent
C. The polarity of the P-Cl bonds cancel out as a result of the geomeattempt of the molecule.
D. Tbelow are 2 lone pairs of electrons on the central atom, but because of the repulsion, they are on oppowebsite sides of the central atom and also cancel out.
E. P and Cl are ciose in the routine table, so they have very similar electronegatives, and as such, the P-Cl bonds are not polar.
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