Describe the molecular dipole of OCl2.
The molecular dipole is:
B) measurable and directed toward chlorine.
C) measurable and directed toward oxygen.
Molecules can be polar because of the unsymmetrical distribution of electrons. The dipole moment, μmu, is a measure of the net polarity and is defined as the charge QQ, in coulombs, times the distance between the charges, rr, in meters:
μ = Q × r
The SI unit of dipole moment is the coulomb-meter (C ⋅ m), but another common unit is the debye (D). The two are related as
3.336 × 10−30 C ⋅ m = 1 D
The percent ionic character is a comparison of the measured dipole moment of the bond to the expected dipole moment if electrons are instead transferred:
The dipole moment if electrons are completely transferred is one for which a full unit of charge (1.60 × 10 − 19 C) exists on each end of the bond.
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