Cobalt is a metallic element, atomic number 27 in the period table.

钴是金属元素，原序数是27。

An element's atomic number is the number of protons in its nucleus.

一种元素的原序数是其原的质数。

There are 118 known elements, each organized by atomic number.

有118种已知的元素，每种元素都是按原序数排的。

The periodic table is an organized display of all the chemical elements in order by atomic number.

元素周期表是所有化学元素按原序数有序排的表。

With an atomic number of 11, which of these elements gets its symbol from the Latin word " natrium" ?

原序数为11，下面哪个元素的符号来自拉丁词“natrium”？

Which of these elements, who's atomic number is six is one of the most abundant elements in the known universe?

这些元素，哪一个的原序数是六，是已知宇宙最丰富的元素之一？

The element whose atomic number is at Mercury is also called quicksilver.

原序数为水星的元素也称为水银。

The number of protons in an element is its atomic number.

元素的质数就是它的原序数。

The atomic number is the soul of the atom. It's what makes it it.

原序数是原的灵魂。 这就是它的成功之处。

If not, it's atomic number 47.

如果不是，它的原序数是 47。

And the number of protons, this is defined as the atomic number.

和质数，这被定义为原序数。

" Gold" gold is a yellow metal, atomic number 79 for the chemists out there.

“金”金是一种黄色金属，化学家认为它的原序数为 79。

And the atomic number is the number that you see up there.

原序数就是你在上面看到的数字。

" Gold" (gold) has the chemical symbol Au and the atomic number 79.

“金”（金）的化学符号为Au，原序数为79。

It has the atomic number 28.

它的原序数为 28。

So the atomic number for carbon is six.

所以碳的原序数是六。

Unbeknownst to Mendeleev, he had correctly ordered the elements by atomic number — the number of protons in the atomic nucleus.

门捷夫不知道的是，他已经按照原序数（原的质数）正确地对元素进行了排序。

If you want to be technical, it has the atomic number 78 with the chemical symbol Pt.

如果你想成为技术人员，它的原序数为 78， 化学符号为 Pt。

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序数，我们可能会看到越来越多的这些异常现象。

It has atomic number 13 and the chemical symbol Al.

它的原序数为 13，化学符号为 Al。