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词汇 Iron group
分类 英语词汇 英语翻译词典
释义

Iron group

原声例句
TED-Ed（视频版）

Neutrons have no repelling electric charge so they're easily captured by the iron group elements.

在核中形成中子中子不带电荷。

英语百科

Iron group

Abundances of the chemical elements in the Solar System. Note that the scale of the vertical axis is logarthimic. Hydrogen and helium are most common, from the Big Bang. The next three elements (Li, Be, B) are rare because they are poorly synthesized in the Big Bang and also in stars. The two general trends in the remaining stellar-produced elements are: (1) an alternation of abundance in elements as they have even or odd atomic numbers, and (2) a general decrease in abundance, as elements become heavier. The
The curve of binding energy per nucleon (calculated from the nuclear mass defect) against the number of nucleons in the nucleus. Iron-56 is labelled near the very top of the curve: it can be seen that the

In chemistry and physics, the iron group refers to elements that are in some way related to iron. These elements are relatively abundant both on Earth and elsewhere in the universe. The term is ambiguous in different contexts, and almost obsolete in chemistry.
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