1H1.0083Li6.9411Na22.9919K39.137Rb85.4755Cs132.987Fr223
4Be9.01212Mg24.3120Ca40.0838Sr87.6256Ba137.388Ra226
21Sc44.9639Y88.91
57La138.989Ac227
22Ti47.8740Zr91.2272Hf178.5104Rf267
58Ce140.190Th232
23V50.9441Nb92.9173Ta180.9105Db268
59Pr140.991Pa231
24Cr5242Mo95.9574W183.8106Sg271
60Nd144.292U238
25Mn54.9443Tc97.9175Re186.2107Bh274
61Pm144.993Np237
26Fe55.8544Ru101.176Os190.2108Hs269
62Sm150.494Pu244
27Co58.9345Rh102.977Ir192.2109Mt276
63Eu15295Am243
28Ni58.6946Pd106.478Pt195.1110Ds281
64Gd157.396Cm247
29Cu63.5547Ag107.979Au197111Rg281
65Tb158.997Bk247
30Zn65.3848Cd112.480Hg200.6112Cn285
66Dy162.598Cf251
5B10.8113Al26.9831Ga69.7249In114.881Tl204.4113Nh286
67Ho164.999Es252
6C12.0114Si28.0932Ge72.6350Sn118.782Pb207.2114Fl289
68Er167.3100Fm257
7N14.0115P30.9733As74.9251Sb121.883Bi209115Mc288
69Tm168.9101Md258
8O1616S32.0634Se78.9752Te127.684Po209116Lv293
70Yb173102No259
9F1917Cl35.4535Br79.953I126.985At210117Ts294
71Lu175103Lr262
2He4.00310Ne20.1818Ar39.9536Kr83.854Xe131.386Rn222118Og294
Mendelevium
Md
Rn 7s2 5f13
827°C
Radioactive metallic transuranic element. Belongs to the actinoid series. Only known isotope, ²⁵⁶Md has a half-life of 1.3 hours. First identified by Glenn T. Seaborg, Albert Ghiorso and associates in 1955. Alternative name Unnilunium has been proposed. Named after the 'inventor' of the periodic table, Dmitri Mendeleev.
173pm
139pm
100101102103104105106log(kJ mol⁻¹)
0, +3
It has no significant commercial applications.
287pm
246pm
Made by bombarding Einsteinium with Helium ions.
Discovered in 1955 by G.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr. in United States
Named in honor of the scientist Dmitri Ivanovitch Mendeleyev, who devised the periodic table.
7440-11-1
IsotopeAbundanceHalf Life
258Md-51.5d
260Md-27.8d

https://reuben.science

https://github.com/reubn/tabla


Using data from mendeleev.
MIT License Copyright (c) 2020 reubn Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. pb2bb3a9eb2b62a1fdf94