In polyatomic molecule ABi, the electron binding energy of A atom which bonded with i Batoms can be expressed as where n,Z, S were the Principal quantum number, nuclear charge and eigen penetrating-shielding contrstant for A atom respectively;

• 多原子分子ABi冲，A直接与i个B原子键合时，其电子结合能可表示为：n、Z、S分别为A原子轨道主量子数、核电荷和特征屏蔽-钻穿常数；