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

钴金属元素，原子27。

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

一种元素的原子其原子核中的质子。

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

有118种已知的元素，每种元素都按原子排列的。

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

元素周期表所有化学元素按原子有排列的表。

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，哪一个的原子六，已知宇宙中最丰富的元素之一？

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

原子为11，下面哪个元素的符号来自拉丁词“natrium”？

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

门捷列夫不知道的，他已经按照原子（原子核中的质子）正确地对元素进行了排。

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

元素中的质子就它的原子。

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

原子原子的灵魂。 这就它的成功之处。

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

“金”金一种黄色金属，化学家认为它的原子为 79。

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

原子为水星的元素也称为水银。

If not, it's atomic number 47.

如果不，它的原子 47。

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

“金”（金）的化学符号为Au，原子为79。

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

和质子，这被定义为原子。

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，它的原子为 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子，我们可能会看到越来越多的这些异常现象。

Chemists use it on x-ray defractometers because actually it is so lightweight it is actually got atomic number 4.

化学家在 X 射线衍射仪上使用它， 因为实际上它非常轻，原子为 4。

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

原子就你在上面看到的字。

It has the atomic number 28.

它的原子为 28。

It has atomic number 13 and the chemical symbol Al.

它的原子为 13，化学符号为 Al。