Early versions did not list an element for every atomic number.
早期的版本并没有为每个原子序数列出一个元素。
Then, there'd be an atomic number, for which there was no known element.
然后会出现原子序数，代表了未知元素。
Here is atomic radius versus atomic number.
这是原子半径和原子序数。
The electrode is made of high atomic number metal.
电离室电极用高原子序数的金属制造。
The bigger the atomic number, the deeper the impurity level is.
原子序数越大，杂质能级越深。
In each period, the atomic number of each element is increasing.
每个周期中元素的质子数从左到右递增。
An element's atomic number is the number of protons in its nucleus.
一种元素的原子序数是其原子核中的质子数。
What I am looking at here is boiling point as a function of atomic number.
我在看的是非典，作为原子序数的功能。
One of them here I happened to choose is boiling point versus atomic number.
其中之一，我已经选择的是，沸点及原子序数。
No change in atomic number is possible without a radical change in properties.
性质不发生根本的改变，原子序数的改变是不可能的。
PROFESSOR: five — there's five valence electrons, but the atomic number is actually seven.
教授：5，有5个价电子，但原子序数是7。
It is the nearest whole number to an atom's ATOMIC WEIGHT.
它是最接近原子的原子量的整数。
It is the nearest whole number to an atom's ATOMIC WEIGHT.
它是最接近原子的原子量的整数。
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