radon

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n. 氡 [化] 氡Rn

发音

其它 /ˈɹeɪdɒn/
US /ˈɹeɪdɒn/

别名

exradio radeon

释义与例句

n.
  1. 1.

    The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.

    氡

    不可数
  2. 2.

    Radon-222 (22286Rn), the most stable isotope of said element.

    不可数

词汇关系

名词

同义词 1

RN

上位词 2

inert gas noble gas

相关短语

radon seed [医] 氡小管 Radon measure Radon measures radon seeds Radon point Radon points Radon transform Radon transforms

词源

Contraction of radium emanation, since the element appears in the radioactive decay of radium. By surface analysis, radio- + -on (“suffix for noble gases”).

来源：wiktionary