The inner electrons are so tightly bound that they are for all intents and purposes, immobilized when it comes to reactivity.

内部电子被紧紧地束缚着，因此无论怎样，当进行反应时，它都是固定的。

youdao

So, that means the electrons are tightly bound.

所以那意味着这些电子是被紧紧地束缚着的。

youdao

This is partly explained because the bigger an atom is, the more weakly its outer electrons are bound to it (and hence the further those electrons are from the nucleus).

原子越大，其外层电子受原子束缚力越弱，这是解释铅和锡两者差别的一部分原因。

youdao

The inner electrons are so tightly bound that they are for all intents and purposes, immobilized when it comes to reactivity.

内部电子被紧紧地束缚着,因此无论怎样，当进行反应时，它都是固定的。

麻省理工公开课 - 固态化学导论课程节选

They are good electron donors because the electrons aren't tightly bound.

它们是很好的电子给体,因为电子没有被牢固地束缚。

麻省理工公开课 - 固态化学导论课程节选

So, that means the electrons are tightly bound.

所以那意味着这些电子是被紧紧地束缚着的。

麻省理工公开课 - 固态化学导论课程节选

This is partly explained because the bigger an atom is, the more weakly its outer electrons are bound to it (and hence the further those electrons are from the nucleus).

ECONOMIST: Einstein and car batteries

In this compound, the tightly bound orbitals act like wells into which free electrons can fall, allowing the material to capture them more easily.

ECONOMIST: Einstein and car batteries