Mendelevium - Simple English Wikipedia, the free encyclopedia
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://upload.wikimedia.org/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
[change | change source]The 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
[change | change source] Media related to Mendelevium at Wikimedia Commons
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H | He | ||||||||||||||||||||||||||||||||||||||||
Li | Be | B | C | N | O | F | Ne | ||||||||||||||||||||||||||||||||||
Na | Mg | Al | Si | P | S | Cl | Ar | ||||||||||||||||||||||||||||||||||
K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr | ||||||||||||||||||||||||
Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe | ||||||||||||||||||||||||
Cs | Ba | La | Ce | Pr | Nd | Pm | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn | ||||||||||
Fr | Ra | Ac | Th | Pa | U | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og | ||||||||||
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