这能解释为什么它在元素周期表中缺失了吗？
例如在元素周期表中，碲排在碘之前，尽管它的原子质量略大一些。
For example, tellurium comes before iodine in the periodic table, even though its atomic mass is slightly greater.
那么我的元素周期表是错的吗？
早期的元素周期表有空缺，缺少一些元素。
Early versions of the periodic table had gaps, missing elements.
元素周期表的结构似乎限制了潜在元素的数量。
The structure of the periodic table appeared to limit the number of possible elements.
当然，它在被人发现或制造前，就是一种元素周期表使得我们期待其存在的元素。
Of course, it was an element the periodic table let us to expect existed before anyone had found it or made it.
事实上，后来的研究已经证明，在元素周期表中，元素不应该严格按照原子质量来排序。
In fact, subsequent work has shown that in a periodic table, elements should not be ordered strictly by atomic mass.
他依然能够将元素周期表制作出来。
选个关于元素周期表的东西。
元素周期表的右半部分。
她给了奥巴马一个元素周期表的微型复制品。
She gave him a miniature copy of the periodic table of elements.
比如，考虑一下用XML表示的元素周期表。
As an example, consider the periodic table expressed in XML.
这就是元素周期表看上去的样子。
六种稀有气体在元素周期表的最右侧。
The six noble gases are found in the far right column of the periodic table.
这个表在你们的元素周期表下面应该有。
这门课并不要求大家去背元素周期表，一点都不要求。
You will never in this class have to memorize anything about the periodic table.
经过3年的研究，元素周期表上又增添了2种元素。
Two new elements have been added to the periodic table after a three-year review by the governing bodies of chemistry and physics.
它们是黑色的,中间还有些元素周期表上的彩色元素。
如果你看元素周期表，你会在这一侧发现，这是原子化焓。
Anyway, if you go to your Periodic Table you will find that on the one side you can get what is called the enthalpy of atomization.
那么当我们沿着行向右走的时候，这是我漂亮的元素周期表。
So as we go across the row, and this is my beautiful picture of a periodic table here.
他们还发现，元素周期表中的第一号金属元素在室温下为气态。
They may also have found the first metal that is a gas at room temperature.
炼金术，或嬗变，已经在元素周期表中增加了新元素，包括钚。
Alchemy, or transmutation, has placed new elements on the periodic table, including plutonium.
我们能从元素周期表中得到这个，所以接下来要讲元素周期表。
We can get this from the Periodic Table, so reported is Periodic Table.
我们需要引其他一些东西进来才能解释清楚，元素周期表中发生的这种现象。
We need to add something else in order to explain what is going on in the Periodic Table.
锂是元素周期表第三“轻”的元素，这使得锂具备更高的能量密度。
Lithium is the third-lightest element on the periodic table, which allows for far greater energy density.
在元素周期表中，砷就位于磷的下面，二者具有很多相同的化学性质。
Arsenic sits right beneath phosphorus in the periodic table of the elements and shares many of its chemical properties.
在测试中你们可以使用，化学元素周期表的官方版本，你们应该大部分都有了吧。
You are allowed to use on the test the official version of the Periodic Table of the Elements which most of you should have by now.
科学家们忙于填补元素周期表的空白、探索未知的原子现象(如放射性和键合)。
Boffins were busily filling in the blanks in the periodic table and probing unknown atomic phenomena (like radioactivity and bonding).
科学家们忙于填补元素周期表的空白、探索未知的原子现象(如放射性和键合)。
Boffins were busily filling in the blanks in the periodic table and probing unknown atomic phenomena (like radioactivity and bonding).
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