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

钴是金属元素，原子数是27。

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

一种元素原子数是其原子核中质子数。

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

有118种已知元素，每种元素都是按原子数列。

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子数有列表。

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

所以费曼说，不可能有原子数高于 137 元素。

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

原子数为11，下面哪个元素符号来自拉丁词“natrium”？

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

这些元素中，哪一个原子数是六，是已知宇宙中最丰富元素之一？

So the atomic number for carbon is six.

所以碳原子数是六。

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

原子数为水星元素也称为水银。

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

和质子数，这被定义为原子数。

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

原子数是原子灵魂。 这就是它成功之处。

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

原子数就是你在上面看到数字。

If not, it's atomic number 47.

如果不是，它原子数是 47。

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

元素中质子数就是它原子数。

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

“金”金是一种黄色金属，化学家认为它原子数为 79。

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

“金”（金）化学符号为Au，原子数为79。

The atomic number of oxygen is eight.

氧原子数是八。

It has the atomic number 28.

它原子数为 28。

First, we start with the chemical symbol for the nucleus, which is determined by its atomic number.

首先我们从核化学符号开始，这取决于它原子。

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

门捷列夫不知道是，他已经按照原子数（原子核中质子数）正确地对元素进行了。