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 DeCS Categories

D01 Inorganic Chemicals .
D01.268 Elements .
D01.268.185 Chalcogens .
D01.268.185.600 Polonium .
D01.268.185.900 Sulfur .
D01.268.185.950 Tellurium .
D01.268.271 Elements, Radioactive .
D01.268.271.100 Actinoid Series Elements .
D01.268.271.100.033 Actinium .
D01.268.271.100.725 Protactinium .
D01.268.271.680 Polonium .
D01.268.271.720 Promethium .
D01.268.271.800 Radon .
D01.268.513 Metalloids .
D01.268.513.875 Polonium .
D01.268.513.968 Tellurium .
D01.268.549 Metals, Alkali .
D01.268.549.750 Sodium .
D01.268.556 Metals, Heavy .
D01.268.556.025 Actinium .
D01.268.556.750 Protactinium .
D01.268.557 Metals, Light .
D01.268.557.050 Aluminum .
D01.268.557.650 Sodium .
D01.268.558 Metals, Rare Earth .
D01.268.558.362 Lanthanoid Series Elements .
D01.268.558.362.875 Promethium .
D01.268.558.362.937 Samarium .
D01.268.613 Noble Gases .
D01.268.613.700 Radon .
D01.362 Gases .
D01.362.641 Noble Gases .
D01.362.641.745 Radon .
D01.496 Isotopes .
D01.496.749 Radioisotopes .
D01.496.749.305 Elements, Radioactive .
D01.496.749.305.100 Actinoid Series Elements .
D01.496.749.305.100.033 Actinium .
D01.496.749.305.100.725 Protactinium .
D01.496.749.305.680 Polonium .
D01.496.749.305.720 Promethium .
D01.496.749.305.800 Radon .
D01.552 Metals .
D01.552.020 Actinoid Series Elements .
D01.552.020.042 Actinium .
D01.552.020.778 Protactinium .
D01.552.528 Metals, Alkali .
D01.552.528.850 Sodium .
D01.552.544 Metals, Heavy .
D01.552.544.025 Actinium .
D01.552.544.750 Protactinium .
D01.552.547 Metals, Light .
D01.552.547.050 Aluminum .
D01.552.547.725 Sodium .
D01.552.550 Metals, Rare Earth .
D01.552.550.399 Lanthanoid Series Elements .
D01.552.550.399.875 Promethium .
D01.552.550.399.937 Samarium .
SP4 Environmental Health .
SP4.011 Science .
SP4.011.097 Chemistry .
SP4.011.097.063 Elements .
SP4.011.097.063.799 Aluminum .
SP4.011.097.063.814 Sulfur .
SP4.011.097.063.984 Sodium .
SP4.041 Air 306 .
SP4.041.427 Air Pollution .
SP4.041.427.478 Radon .
 
 Terms
 Synonyms & Historicals		Documents
LILACS e MDL		 
Polonium .
A radioactive element that is a member of the chalcogen family. It has the atomic symbol Po, atomic number 84, and the atomic weight of the isotope with the longest half-life (209Po) is 208.98. It decays by alpha-emission. .
1.00
2984
 
Actinium .
A trivalent radioactive element and the prototypical member of the actinide family. It has the atomic symbol Ac, and atomic number 89. Its principal isotope is 227 and it decays primarily by beta-emission. .
0.53
0129
 
Protactinium .
A radioactive element of the actinide group of metals. It has the atomic symbol Pa, atomic number 91, and atomic weight 231. It decays by alpha-emission. .
0.51
054
 
Radon .
Actinon .
Thoron (Element) .
A naturally radioactive element with atomic symbol Rn, and atomic number 86. It is a member of the noble gas family found in soil, and is released during the decay of RADIUM. .
0.46
94993
 
Tellurium .
An element that is a member of the chalcogen family. It has the atomic symbol Te, atomic number 52, and atomic weight 127.60. It has been used as a coloring agent and in the manufacture of electrical equipment. Exposure may cause nausea, vomiting, and CNS depression. .
0.45
102505
 
Sodium .
Sodium Ion Level .
Sodium-23 .
Ion Level, Sodium .
Level, Sodium Ion .
Sodium 23 .
A member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23. .
0.45
60493292
 
Aluminum .
Aluminium-27 .
Aluminum-27 .
Aluminium 27 .
Aluminum 27 .
A metallic element that has the atomic number 13, atomic symbol Al, and atomic weight 26.98. .
0.44
19415492
 
Promethium .
A radioactive element of the rare earth family of metals. It has the atomic symbol Pm, and atomic number 61. It has been used in the construction of atomic batteries, in the preparation of self-luminous compounds, and as a beta-particle source for thickness gauges. .
0.44
0114
 
Sulfur .
Sulfur-16 .
Sulfur 16 .
An element that is a member of the chalcogen family. It has an atomic symbol S, atomic number 16, and atomic weight [32.059; 32.076]. It is found in the amino acids cysteine and methionine. .
0.44
4212397
 
Samarium .
An element of the rare earth family of metals. It has the atomic symbol Sm, atomic number 62, and atomic weight 150.36. The oxide is used in the control rods of some nuclear reactors. .
0.43
14851