| 单词 |
radium emanation |
| 释义 |
DictionarySeeradonradium emanation
radium emanation: see radonradon
, gaseous radioactive chemical element; symbol Rn; at. no. 86; mass no. of most stable isotope 222; m.p. about −71°C;; b.p. −61.8°C;; density 9.73 grams per liter at STP; valence usually 0. Radon is colorless and the most dense gas known.
..... Click the link for more information. .radium emanation
ra·di·um em·a·na·tionradon-222. See: emanon. radium emanationThe radioactive gas given off by radium. Synonym: radonSee also: emanationAcronymsSeereinforced |
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