jeudi 30 juin 2016

Tungsten

Isotopes

← Previous revision Revision as of 02:04, 27 June 2016
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:<sup>184</sup>W, t<sub>1/2</sub> &gt; 1.8×10<sup>20</sup> years
 
:<sup>184</sup>W, t<sub>1/2</sub> &gt; 1.8×10<sup>20</sup> years
   
:<sup>186</sup>W, t<sub>1/2</sub> &gt; 4.1×10<sup>18</sup> years
+
:<sup>186</sup>W, t<sub>1/2</sub> &gt; 1.7×10<sup>20</sup> years
   
 
Another 30 artificial [[radioisotope]]s of tungsten have been characterized, the most stable of which are <sup>181</sup>W with a half-life of 121.2&nbsp;days, <sup>185</sup>W with a half-life of 75.1&nbsp;days, <sup>188</sup>W with a half-life of 69.4&nbsp;days, <sup>178</sup>W with a half-life of 21.6&nbsp;days, and <sup>187</sup>W with a half-life of 23.72 h.<ref name=isotopes/> All of the remaining [[radioactive]] isotopes have half-lives of less than 3&nbsp;hours, and most of these have half-lives below 8&nbsp;minutes.<ref name=isotopes/> Tungsten also has 4&nbsp;[[meta state]]s, the most stable being <sup>179m</sup>W (t<sub>1/2</sub> 6.4&nbsp;minutes).
 
Another 30 artificial [[radioisotope]]s of tungsten have been characterized, the most stable of which are <sup>181</sup>W with a half-life of 121.2&nbsp;days, <sup>185</sup>W with a half-life of 75.1&nbsp;days, <sup>188</sup>W with a half-life of 69.4&nbsp;days, <sup>178</sup>W with a half-life of 21.6&nbsp;days, and <sup>187</sup>W with a half-life of 23.72 h.<ref name=isotopes/> All of the remaining [[radioactive]] isotopes have half-lives of less than 3&nbsp;hours, and most of these have half-lives below 8&nbsp;minutes.<ref name=isotopes/> Tungsten also has 4&nbsp;[[meta state]]s, the most stable being <sup>179m</sup>W (t<sub>1/2</sub> 6.4&nbsp;minutes).

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