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单词 Ionization energy
释义

Ionization energy

原声例句
Crash Course 综合篇

This energy is called " ionization energy."

这种能量称为“电离能” 。

Crash Course 综合篇

Just like with the ionization energy there's a discrete energy jump involved with the adding of an electron.

就像电离能一样, 有一个离散的能量跃迁涉及到一个电子的添加。

可汗学院:生物化学

Now, when we talked about ionization energy, I think, we talked about when oxygen and water bond, right?

现在,当我们谈论电离能时,我想,我们谈论的是氧和水结合的时间,对吗?

可汗学院:生物化学

Assuming you've had a go at it, and it's in some ways the same idea, or it's a similar idea as ionization energy.

假设您尝试过它,并且它在某些方面是相同的想法,或者它与电离能的想法相似。

可汗学院:生物化学

And we saw in the video on ionization energy, that's why this has a low ionization energy, it doesn't take much energy, in a gaseous state, to remove an electron from sodium.

我们在有关电离能的视频中看到,这就是为什么它具有低电离能的原因,在气态下,从钠中去除电子不需要太多能量。

中文百科

电离能

第一电离能。
Figure 1. Franck–Condon principle energy diagram. For ionization of a diatomic molecule the only nuclear coordinate is the bond length. The lower curve is the potential energy curve of the neutral molecule, and the upper curve is for the positive ion with a longer bond length. The blue arrow is vertical ionization, here from the ground state of the molecule to the v=2 level of the ion.

电离能(Ionization energy),或称游离能电离焓,常简记为EI,指的是将一个电子自一个孤立的原子、离子或分子移至无限远处所需的能量。更广义的用法,第一电离能定义为气态原子失去一个电子成为一价气态正离子所需的最低能量,记作I1;气态一价正离子失去一个电子成为气态二价正离子所需的能量称为第二电离能,记作I2。依此类推。

电离能的数值和原子的有效核电荷密切相关,也和原子大小、轨道中电子间的推斥作用等因素有关。

电离能是了解原子性质的重要数据。

英语百科

Ionization energy 电离能

Periodic trends for ionization energy (IE) vs. atomic number: note that within each of the seven periods the IE (colored circles) of an element begins at a minimum for the first column of the Periodic table (the alkali metals), and progresses to a maximum for the last column (the noble gases) which are indicated by vertical lines and labelled with a noble gas element symbol, and which also serve as lines dividing the  7 periods. Note that the maximum ionization energy for each row diminishes as one progresses from row 1 to row 7 in a given column, due to the increasing distance of the outer electron shell from the nucleus as inner shells are added.
Figure 1. Franck–Condon principle energy diagram. For ionization of a diatomic molecule the only nuclear coordinate is the bond length. The lower curve is the potential energy curve of the neutral molecule, and the upper curve is for the positive ion with a longer bond length. The blue arrow is vertical ionization, here from the ground state of the molecule to the v=2 level of the ion.

The ionization energy (IE) is qualitatively defined as the amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated gaseous atom to form a cation. It is quantitatively expressed in symbols as:

where X is any atom or molecule capable of being ionized, X is that atom or molecule with an electron removed, and e is the removed electron. This is an endothermic process.

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更新时间:2025/6/22 10:02:51