鍵偶極矩是衡量化學鍵極性大小的物理量,表示為

.
μ為鍵偶極矩
δ為與正負電荷中心所帶電荷(電量
d為分子中正負電荷中心的距離

鍵矩是向量,方向從正指向負。 鍵矩單位是德拜(D,Debye)或庫侖·(C‧m)
1D= 3.336X10-30C‧m

參見

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