The Element Mendelevium

Mendelevium is a rare, radioactive metal which is named after Dmitri Mendeleev, the father of the Periodic Table. Researchers have shown that mendelevium has a moderately stable dipositive (II) oxidation state and that Mendelevium-256 has been used to find out more about chemical properties of the element while it is in its aqueous state. Since only very trace amounts of mendelevium has ever been produced, we have no evidence of its industrial uses or application to day to day life.

 


Atomic Number & Chemical Properties


Element Basics:

Chemical Symbol: Md
Atomic Number: 101
Atomic Weight: 258.1
Element Classification: Radioactive Rare Earth Element (Actinide Series)
Discovered By: G.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.
Date of Discovery: 1955 (United States)
Origin of Name: Named in honor of the scientist Dmitri Ivanovitch Mendeleyev, who devised the periodic table.

How to Recognize it at a Party:

Radioactive, synthetic metal

Seriously Atomic Information:

Density (g/cc): n/a
Melting Point (°K): 1100
Boiling Point (°K): n/a
Atomic Radius (pm): 287
Atomic Volume (cc/mol): n/a
Covalent Radius (pm): n/a
Ionic Radius: n/a
Pauling Negativity Number: 1.3
First Ionizing Energy (kJ/mol): (635)
Oxidation States: 3
Electronic Configuration: [Rn] 5f13 7s2

Getting Intimate with Mendelevium:

Lattice Structure: n/a
Lattice Constant (Å): n/a
Lattice C/A Ratio: n/a
Specific Heat (@20°C J/g mol): n/a
Fusion Heat (kJ/mol): n/a
Evaporation Heat (kJ/mol): n/a
Thermal Conductivity (@25°C W/m K):
Debye Temperature (°K): n/a


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