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

钴，原子序数27。

(END VIDEOTAPE) (BEGIN VIDEO CLIP) AZUZ (voice-over): Ten-second trivia: Which element, which forms more compounds than any other, is represented by an atomic number of 6?

视频结束)阿祖兹(画外音): 10秒钟小知识: 哪个，比其他能形成更多化合物，而且它原子序数6?

Even before World War Two, scientists had known about the potential energy inside uranium, the heaviest metal in the periodic table a diagram which groups the chemical elements into rows and columns according to their atomic number and symbol.

甚至在第二次世界大战之前，科学家们就已经知道铀内部势能。铀期表中最重，期表根据原子序数和原子符号将化学分成行和列图表。

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

这些中，哪一个原子序数六，已知宇宙中最丰富之一？

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

一种原子序数其原子核中质子数。

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

有118种已知，每种都按原子序数排列。

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

原子序数为11，下面哪个符号来自拉丁词“natrium”？

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

期表所有化学按原子序数有序排列表。

It's a, hydrogen, the lightest of all gases which come at the very start of the periodic table, having the atomic number 1.

答案a选项——氢，它位于期表最开始位置所有气体中最轻，原子序数1。

We have atomic number across the bottom.

我们在底部有原子序数。

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个中子原子核（原子序数应在120-130之间）会稳定出现足够长时间——也许几百万年。

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，他已经按照原子序数（原子核中质子数）正确地对进行了排序。

We would find since it has a different atom number it's going to have different ratio of average masses.

我们会发现，由于它原子序数不同，它平均质量比也不同。

You can see on the periodic table that's going to be H. It's going 1 atomic number.

您可以在期表中看到 H。它原子序数为 1。

The atomic number is the number of protons.

原子序数即质子数。

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

原子序数为水星也被称为水银。

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

“Gold”一种黄色，对于化学家来说，其原子序数为79。

Well what happens as we increase the atomic number?

那么当我们增加原子序数时会发生什么？

It is not quite however, the end of the story In the 1930s physicists discovered that radioactivity could in essence be reversed by bombarding atoms with subatomic particles to increase their atomic numbers.

这还不故事结尾。在20世纪30年代，物理学家发现通过用亚原子粒子轰击原子来增加它们原子序数，实际上可以逆转放射性。

Any two nuclei that have the same atomic number but different mass numbers are known as isotopes, with most elements having one isotope that is more common than the others.

具有相同原子序数但质量数不同任何两个原子核称为同位，大多数具有比其他同位更常见一种同位。