Mendelevium
Mendelevium (pronounced /ˌmɛndəˈlɛviəm/)) is a synthetic element with the symbol Md (used to be Mv) and the atomic number 101. It is a metallic radioactive transuranic element of the actinides.
![](http://up.wiki.x.io/wikipedia/commons/thumb/1/14/Mendeleev_Photographische_Gesellschaft_3.jpg/200px-Mendeleev_Photographische_Gesellschaft_3.jpg)
Mendelevium is created by einsteinium and alpha particles forcefully combining and was named after Dmitri Mendeleev, the creator of the Periodic Table.
The half-life of Mendelevium 258 is 51 days, while the half-life of Mendelevium 256 is 1.17 hours.
Health Effects
changeThe International Commission on Radiological Protection has set annual exposure limits for the most stable isotope. For mendelevium-258, the ingestion limit was set at 9×105 becquerels (1 Bq = 1 decay per second). Given the half-life of this isotope, this is only 2.48 ng (nanograms). The inhalation limit is at 6000 Bq or 16.5 pg (picogram).
Other website
changeMedia related to Mendelevium at Wikimedia Commons