它是根据原子序数的增加来排列的，原子序数是一种元素单个原子的质子数。
It is arranged according to increasing atomic number, which is the number of protons in each atom of an element.
给定元素的所有同位素都含有相同的质子数，但它们的中子数不同，因此它们的原子质量也不同。
All the isotopes of a given element have the same number of protons, but differ in their number of neutrons, and hence in their atomic mass.
我们从质子数开始。
质子数是在左下方。
它等于质子数，加上中子数。
And it is equal to the sum of the number of protons plus the number of neutrons.
改变元素需要改变原子数(质子数)。
Changing the element requires changing the atomic (proton) number.
它是质子数加上中子数。
每个周期中元素的质子数从左到右递增。
In each period, the atomic number of each element is increasing.
一种元素的原子序数是其原子核中的质子数。
An element's atomic number is the number of protons in its nucleus.
所以，我们可以间接得到中子数，因为我们知道质子数了。
So we get at the number of neutrons indirectly because we know the proton number here.
有相同的Z，相同的质子数，但是不同的A，也就是中子数不同。
They all have the same Z, the same proton number, but different A, which means number of neutrons varies.
由于原子内的质子数与电子数相同，所以原子不带电荷。
Atoms have equal Numbers of protons and electrons, so have no net charge.
在一个同位素的原子中中子数减去质子数，同位数是放射性的指示。
The number of neutrons minus the number of protons in the atom of an isotope. isotopic number is an indication of radioactivity.
一个原子的总重量能够近似取决于这个原子核中的质子数和中子数之和。
The total mass of an atom is determined very nearly by the total number of protons and neutrons in its nucleus.
在它们的原子核中质子数是相同的(这是一个元素定义性的特征)，但是中子的数量不同。
They have the same number of protons in their nuclei (this is the defining characteristic of an element), but different Numbers of neutrons.
同位素：一种化学元素的两个或多个类型，它们的原子核具有相同的质子数，而中子数却不同。
Isotope: One of two or more species of atoms of a chemical element having nuclei with the same number of protons but different Numbers of neutrons.
所以碳12，我们知道它有质子数，根据定义，那就是6，而电子数，12减6等于6，所以它有6个中子。
So carbon 12. We know that it has the proton number, by definition, is 6. And the neutron number, 6 from 12 is 6. So it has 6 protons and 6 neutrons.
钴的一种放射性同位素，质子数'0，具有异常强烈的伽马射线作用，用于放射疗法、冶金和材料测试。
A radioactive isotope of cobalt with mass number '0 and exceptionally intense gamma-ray activity, used in radiotherapy, metallurgy, and materials testing.
质子数。，Z，proton，number。,原子核中的质子数，这是原子核的质子数，在中性原子中，等于,电子数。
Z Number of protons in the nucleus, this is number of protons in the nucleus, which in the neutral atom is equal to the number of electrons.
在各种钨同位素原子里有74质子，但有着不同的中子数。钨- 182有108个中子，而钨- 184有110个中子。
Isotopes of tungsten each have 74 protons in their atoms but different Numbers of neutrons - tungsten-182 has 108 neutrons, while tungsten-184 has 110.
目前已知的最大中子数是126,82个质子和126个中子组成了元素周期表中最重最稳定的同位素。
The highest known magic number for neutrons alone is 126. Lead, with 82 protons and 126 neutrons, is thus "doubly magic" and the heaviest stable isotope in the periodic table.
全功率运行时，数兆的质子在大型强子对撞机的加速环中加速，一秒钟可绕行11245圈，速度达到光速的99.99%。
At full power, trillions of protons will race around the LHC accelerator ring 11, 245 times a second, travelling at 99.99 percent the speed of light.
具备6个质子和6个中子，碳原子数通常为12。
With six protons and six neutrons, carbon normally has an atomic number of 12.
质子衰变；衰变寿命；重子数守恒；探测器。
Proton decay, Decay lifetime, Baryon-number Conservation, Detector.
而当一个原子的质子和电子数不均衡时，电子便开始跳跃起来。
When an atom's proton and electron Numbers are uneven, the electron dance begins.
这表示你可以改变中子数，而不会改变它的化学特性，因为化学特性是由质子决定的。
This means you can vary the neutron number without changing chemical identity, because chemical identity is fixed by the proton.
这表示你可以改变中子数，而不会改变它的化学特性，因为化学特性是由质子决定的。
This means you can vary the neutron number without changing chemical identity, because chemical identity is fixed by the proton.
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