From the Van der Waals constants for gases and the theoretical value of the Van der Waals energy between two hydrogen atoms, the Van der Waals energy between two hydrogen, nitrogen, oxygen, or chlorine atoms has been calculated.

• 根据气体的Van der Waals常数和两个氢原子间的Van der Waals能之理论值；计算了两个氢、氮、氧或氯原子间的Van der Waals能.