It is a double column, You can see, it starts with hydrogen and goes to mercury in ascending order of atomic mass.
双纵栏,你们看到,从氢开始,然后到水银,按原子质量的升序排列。
So when we talk about orbitals in multi-electron atoms, they're actually lower in energy than the corresponding h atom orbitals.
它们的能量实际上,比对应的氢,原子轨道要低。
This is the homonuclear bond energy for hydrogen in pure hydrogen. There we have perfect covalency.
这是氢的同原子的共价能,在纯氢中,我们有完美的共价键。
So let's take the case of acetylene where we have two carbon atoms that are going to be triple bonded to each other, each are bonded to a carbon and then to one hydrogen.
让我们来看一看乙炔的例子,我们有两个碳原子,成三键,每个碳和一个碳一个氢相连。
So, why don't you go ahead and tell me, keeping that in mind, which atom in terms of h c or n would you expect to be in the center of hydrogen cyanide?
那么,请大家来告诉我,并且记住它,你认为氢,碳和氮中哪个原子,应该在氰化氢的中间呢?
We saw the Schr?dinger equation for atomic hydrogen, but you can write it for more complex systems.
我们看过原子氢的薛定谔方程,但其实我们能把他用在更复杂的体系。
So, in talking about covalent bonds, we should be able to still apply a more general definition of a chemical bond, which should tell us that the h 2 molecule is going to be lower in energy than if we looked at 2 separate hydrogen atom molecules.
那么,既然提到了共价键,我们应该还可以,给化学键下一个更普遍的定义,那就是告诉我们氢分子能量应该更低,与两个分开的氢的单原子分子相比。
A couple of other things about hydrogen: hydrogen also, like other elements, has isotopes and we already saw that in 1766, Cavendish isolated atomic hydrogen and enunciated some of its properties.
一些关于氢的东西:,氢气,就像其他元素一样,有同位素,人们在1766年就发现了这一点,卡文迪许分离出原子氢,并且阐述了它的一些性质。
But, it could be not just atomic hydrogen.
但是,它不能仅仅是原子氢。
I started with two electrons, one each from two atomic hydrogens.
完成了两个电子,它们分别来自于两个原子氢。
OK, atomic hydrogen, one proton, one electron.
原子氢,单个质子,单电子。
H We've been talking about atomic hydrogen, H.
我们讨论的原子氢。
This is the 1s. And, just to be clear, this is the 1s atomic orbital in atomic hydrogen.
说清楚,这是原子氢的1s原子轨道。
It's a sigma bond, - and it's going to be -- N2sp3 no. OK, it's going to be nitrogen 2 s p 3, because it's a nitrogen atom, 1s and then hydrogen 1 s.
它是sigma键,它是-,不,OK,它是,因为这是个氮原子,然后是氢。
What is the energy change going from two atomic hydrogens to one H2?
什么是能量的改变,从两个原子氢到H2分子?
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