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  • tellurium (Te). Alkaline earth metals - group 2: beryllium (Be) through radium (Ra). Alkali metals - group 1: lithium (Li) through francium (Fr). Body-centered
    15 KB (1,443 words) - 00:26, 24 April 2016
  • francium (Fr). Alkaline earth metals - group 2: beryllium (Be) through radium (Ra). Aluminides - aluminum (Al): native aluminum and minerals above 25
    12 KB (1,224 words) - 00:38, 24 April 2016
  • True or False, Indium is a transition-metal element. 11. Yes or No, Radium is an actinide element. 12. Carnotite is a potassium uranium 13
    12 KB (1,041 words) - 02:36, 21 April 2016
  • peaks for 226Ra, 214Pb, and 214Bi. These isotopes are part of the uranium-radium decay line. As 238U is an alpha-ray emitter, it is not shown. The peak at
    18 KB (1,820 words) - 02:06, 23 April 2016
  • potassium, uranium and thorium and their decay products, some of which, like radium and radon are intensely radioactive but occur in low concentrations." "An
    20 KB (1,952 words) - 02:37, 27 June 2016
  • region [is] a benchmark for" 4. True or False, The chemical element radium has been mapped by a gamma-ray spectrometer over the rocky surface of the
    11 KB (998 words) - 22:20, 23 April 2016
  • tellurium (Te). Alkaline earth metals - group 2: beryllium (Be) through radium (Ra). Alkali metals - group 1: lithium (Li) through francium (Fr). Body-centered
    79 KB (7,336 words) - 02:34, 27 June 2016
  • ecosystem. Minerals containing naturally radioactive elements (potassium, radium, uranium, thorium...) Background cosmic rays Solar flux Nuclear power plants
    3 KB (408 words) - 00:33, 27 April 2013
  • development, testing at Alamogordo, and the deployment of the first (so-called) `atom' bombs (or A-bombs, that are in fact nuclear fission bombs). Thus, the famous
    17 KB (2,479 words) - 00:53, 2 July 2015
  • Enjoy learning by doing! 1. Complete the text: 2. Yes or No, Radium is an actinide element. 3. Carnotite is a potassium uranium 4. Yes
    7 KB (614 words) - 04:04, 21 April 2016
  • tellurium (Te). Alkaline earth metals - group 2: beryllium (Be) through radium (Ra). Alkali metals - group 1: lithium (Li) through francium (Fr). Body-centered
    104 KB (9,137 words) - 02:46, 21 April 2016
  • True or False, Indium is a transition-metal element. 11. Yes or No, Radium is an actinide element. 12. Carnotite is a potassium uranium 13
    10 KB (912 words) - 02:20, 21 April 2016
  • potassium, uranium and thorium and their decay products, some of which, like radium and radon are intensely radioactive but occur in low concentrations." "An
    115 KB (12,453 words) - 23:21, 8 July 2016
  • peaks for 226Ra, 214Pb, and 214Bi. These isotopes are part of the uranium-radium decay line. As 238U is an alpha-ray emitter, it is not shown. The peak at
    116 KB (13,329 words) - 06:38, 4 July 2016
  • of its black color ... All uraninite minerals contain a small amount of radium as a radioactive decay product of uranium. Uraninite also always contains
    158 KB (18,278 words) - 05:39, 9 July 2016
  • 15. Complete the text: 16. True or False, The chemical element radium has been mapped by a gamma-ray spectrometer over the rocky surface of the
    39 KB (1,563 words) - 12:15, 14 April 2016
  • peaks for 226Ra, 214Pb, and 214Bi. These isotopes are part of the uranium-radium decay line. As 238U is an alpha-ray emitter, it is not shown. The peak at
    141 KB (14,345 words) - 22:45, 22 May 2016
  • potassium, uranium and thorium and their decay products, some of which, like radium and radon are intensely radioactive but occur in low concentrations." "An
    141 KB (17,621 words) - 02:48, 5 June 2016
  • radioactive sources such as 192Ir, 60Co or 137Cs are used." "While in the past radium and radon have both been used for radiography, they have fallen out of use
    131 KB (15,802 words) - 22:34, 12 July 2016
  • received in one hour at a distance of 1 cm from a point source of 1 mg of radium in a 0.5 mm thick platinum enclosure" is called a sievert. “The equivalent
    100 KB (14,048 words) - 15:27, 4 July 2016

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