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... 外层电子 peripheral electron 外圆型锯片 peripheral saw 固定目标的回波 permanent echo ...
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这些外层电子被,称作价电子。
And, these outer shell electrons are termed valence electrons.
当外层电子填补这一空缺时铁原子将发出X射线。
When electrons from farther out fill in these gaps, the iron atoms emit X-rays.
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。
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).
There is a huge difference between the energies in the outermost shell and the inner shells, which tells you that it's unlikely that any electrons except those in the outermost shell are going to be active.
最外层和最里层所具有的能量,有很大差异,而这告诉我们有一点是不太可能的,那就是除了最外层的电子,别的电子都是应该是活泼的。
So, for example, for sodium, we can instead write neon and then 3 s 1.
所以举例来说对于钠其他的外层电子,的结合的电子。
And, these outer shell electrons are termed valence electrons.
这些外层电子被,称作价电子。
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