If you look at the ground state in two different systems -If you look at the ground state which is n equals one, think about this, if I increase the proton charge, the Coulombic force of attraction is greater.

如果你观察两个不同系统的基态,当你观察n，等于1的基态时，试想一下，如果我增加质子电荷，相互吸引的库仑力就会更大。

麻省理工公开课 - 固态化学导论课程节选

So, if we think about the second case here where we have c n minus, now we're talking about a molecule with a net charge of negative 1.

那么，如果我们考虑的是第二个例子,也就是氰离子，那么现在我们讨论的是一个净电荷量为负一的分子。

麻省理工公开课 - 化学原理课程节选

Times the square of the elementary Z charge times n squared over Z.

乘以元电荷的平方,乘以n的平方除以。

麻省理工公开课 - 固态化学导论课程节选