So, Feynman said, there can't be elements with atomic numbers higher than 137.

所以费曼说，不可能有原子序数高于 137 的元素。

As we move down into much heavier atomic numbers, we'll probably see more and more of these anomalies.

随着我们向下移动到更重的原子序数，我们可能会看到越来越多的这些异常现象。

We can describe how many protons and neutrons are in an atom’s nucleus using its atomic and mass numbers.

我们可以使用原子数和质量数来描述原子核中有多少质子和中子。

In alpha decays, the sum of the atomic and mass numbers are always equal on either side of the equation.

在 alpha 衰变中，等式两边的原子数和质量数之和始终相等。

Their prediction is that nuclei containing 184 neutrons (which would have atomic numbers in the 120s) will hang around for sensible amounts of time-possibly as long as several million years.

他们预测，有184个中子的原子核（原子序数应在120-130之间）会稳定出现足够长的时间——也许是几百万年。

And the new, super-heavy elements that are made using particle colliders -- the ones that have atomic numbers over 110 -- all decay in a matter of milliseconds.

而使用粒子对撞机制造的新型超重元素— —原子序数超过 110 的元素— — 都会在几毫秒内衰变。

It took years to create these latest elements, and now scientists have their sights set on creating more new super-heavy elements in row 8, with atomic numbers 119 and above.

创建这些最新元素花了数年时间，现在科学家们将目光投向了在第 8 行创建更多新的超重元素， 原子序数为 119 及以上。

Last Wednesday, the final four elements on the seventh row of the periodic table – the ones with the atomic numbers 113, 115, 117, and 118 – were finally given names.

上周三，元素周期表第七行的最后四种元素——原子序数为 113、115、117 和 118 的元素——终于被命名。

Since the strong force only works across such tiny distances, larger atoms with high atomic numbers actually require additional neutrons to overcome the electromagnetic force and maintain stability within the nuclei.

由于强力仅在如此小的距离内起作用，因此具有高原子序数的较大原子实际上需要额外的中子来克服电磁力并保持原子核内的稳定性。

Those extra neutrons are necessary for atoms with atomic numbers higher than thirty or so, as you can see in this chart relating the number of neutrons to the number of protons in a stable atom.

对于原子序数高于 30 左右的原子来说，这些额外的中子是必需的，正如您在这张图表中看到的，中子数与稳定原子中质子数的关系。