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键偶极矩是衡量化学键极性大小的物理量,表示为

.
μ为键偶极矩
δ为与正负电荷中心所带电荷(电量
d为分子中正负电荷中心的距离

键矩是向量,方向从正指向负。 键矩单位是德拜(D,Debye)或库仑·(C‧m)
1D= 3.336X10-30C‧m

参见

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