Mendelevium Facts

Mendelevium Facts
Mendelevium (Md) has an atomic number of 101, with 101 protons in the nucleus of an atom. This actinoid has an unknown color, but is probably metallic or silver. It was named after Dimitri Mendeleev, who is commonly known as the father of the periodic table.
Interesting Mendelevium Facts:
This element was first synthesized on February 19, 1955, at the University of California in Berkley by scientist who bombarded the element einsteinium with alpha particles.
Glenn Seaborg, Albert Ghiorso, Gregory Choppin, Stanley Thompson, and Bernard Harvey synthesized the element.
The first sample of mendelevium was only seventeen atoms.
The proposed experiment produced only one atom at a time of the sample, made by calculating the number of atoms of material expected times the intensity of the ion beam used, times the bombardment per half-life.
Using Ghiroso's recoil technique, the sample was first synthesized.
While the group of scientists did not actually detect the sample of mendelevium, the spontaneous fission events that the synthesis produced indicated its existence in experiments.
There are sixteen known isotopes of mendelevium.
The most stable isotope is Md-258, which has a half-life of only 51.5 days.
All but three of the remaining isotopes have a half-life of less than an hour and a half.
Most of those isotopes have half-lives of less than five minutes.
Mendelevium also has five meta states.
It is a radioactive element that undoes spontaneous fission.
Based on observation of trace particles, mendelevium is believed to create a divalent metal.
This theory first predicted by Johansson and Rosengren in 1975, nearly twenty years after mendelevium was first observed.
Mendelevium was the first element to allow researchers to observe a trivalent state that was stable in an aqueous solution.
Due to its rarity, there are no known commercial applications for the element.

Related Links:
Periodic Table Facts
Animals Facts