This library contains: periodic table with information about elements. Readers and writers for different formula formats. Indoor radon concentration is higher than ambient, i.e. About 1.3 pCi l −1 of air. However, it is not uncommon to measure indoor radon in the range of 5–50 pCi l −1, with maximums of 2.0 × 10 3 pCi l −1 (see Figure 24.2). Local geological, soil, and weather conditions affect the. If the level of radium-226 exceeds 3 pCi/L, the sample must also be measured for radium-228 (Method 9320). 1.3 Because this method provides for the separation of radium from other water-dissolved solids in the sample, the sensitivity of the method is a functio n of sample size, reagent and instrument background, counting efficiency. Hp le2201w driver download.
Also found in: Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.Related to radium: radium therapy, uranium
ra·di·um
(rā′dē-əm)n. Symbol Ra A rare, brilliant white, luminescent, highly radioactive metallic element found in very small amounts in uranium ores, having more than 40 isotopes and isomers with mass numbers between 201 and 234, of which Ra-226 with a half-life of 1,600 years is the most common. It is used as a neutron source for some research purposes and was formerly widely used in cancer radiotherapy and as a constituent of luminescent paints. Atomic number 88; melting point 696°C; boiling point 1,737°C; specific gravity 5; valence 2. See Periodic Table.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
radium
(ˈreɪdɪəm) n (Elements & Compounds)a. a highly radioactive luminescent white element of the alkaline earth group of metals. It occurs in pitchblende, carnotite, and other uranium ores, and is used in radiotherapy and in luminous paints. Symbol: Ra; atomic no: 88; half-life of most stable isotope, 226Ra: 1620 years; valency: 2; relative density: 5; melting pt: 700°C; boiling pt: 1140°C
[C20: from Latin radius ray]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ra•di•um
(ˈreɪ di əm)n.
a highly radioactive metallic element whose decay yields radon gas and alpha rays. Symbol:Ra;at. wt.: 226; at. no.: 88.
[< French (1898), = Latin rad(ius) ray (see radius) + -ium-ium2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ra·di·um
(rā′dē-əm)Radium 3 1 3 0 X 4
Symbol Ra A rare, bright-white, highly radioactive element that is an alkaline-earth metal and gives off its own light. It occurs naturally in very small amounts in ores and minerals containing uranium. Radium is used as a source of radon gas for the treatment of disease and as a neutron source for scientific research. The most common of its several isotopes has a half-life of 1,622 years. Atomic number 88. See Periodic Table.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Noun | 1. | radium - an intensely radioactive metallic element that occurs in minute amounts in uranium ores atomic number 88, Ra metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. uranium ore - any ore from which uranium can be extracted |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
радий
radium
rádium
radium
[ˈreɪdɪəm]N → radiomCollins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
radium
n → Radiumnt; radium therapy or treatment (Med) → Radiumtherapief
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
radium
(ˈreidiəm) noun a radioactive metallic element, used in treating certain diseases. radium راديوم: عُنْصُر فِلِزّي مُشِع радий rádio rádium das Radium radium ράδιοradio raadium رادیوم radium radiumרדיום एक रेडियोधर्मी धातु radij rádium radium radíum radio ラジウム 라듐 radis rādijs radium radiumradium rad راديوم، هغه فلزى عنصر چه دراډيو اكټيووړانګى خپروى rádio radiu радий rádium radij radijum radium ธาตุกัมมันตภาพรังสีชนิดหนึ่ง radyum 鐳 радій ریڈیم دھات Rađi, nguyên tố kim loại phóng xạ 镭
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
ra·di·um
L. radium, radio, elemento metálico radioactivo y fluorescente usado en algunas de sus variaciones en el tratamiento de tumores malignos;
___needle → aguja de radio, divisa en forma de aguja que contiene radio usado en radioterapia.
radium
n radio (elemento)English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
Radium 3 1 3 0 Microsd Reader
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