All right, so it's very common to talk about electronegativity of different atoms, and you can look up tables of these.

好，这是很常见的,对于不同原子电负性的讨论，大家可以查阅这方面的表格。

麻省理工公开课 - 化学原理课程节选

There is a repulsive force, the attractive force between ions of opposite charge is offset by a repulsive force due to electron cloud interactions.

有一个斥力时,存在于电性不同的离子间的引力,是可以被抵消的，因为电子可以相互影响。

麻省理工公开课 - 固态化学导论课程节选