Lawrencium Facts

Lawrencium Facts
Lawrencium (Lr) has an atomic weight of 103, and therefore has 103 protons in the nucleus of each of its atoms. It is believed to be a solid at 298K, and might be grey in appearance is enough of a sample existed to identify its color.
Interesting Lawrencium Facts:
Lawrencium, a member of the rare earth metals, does not actually occur in the environment on Earth.
It was discovered on February 14, 1961, by a team of researchers made up of Albert Ghiorso, Almon Larsh, Robert Latimer, and Torbjorn Sikkeland.
The team, working at UC Berkley, bombarded three milligrams of californium with boron ions to produce the result.
The first experiment with this bombardment used nitrogen bombardment, which resulted in the target of californium being destroyed.
The end result was a sample of lawrencium that was only two micrograms.
A Russian team was able to synthesize lawrencium in 1965 by bombarding an isotope of americium with an isotope of oxygen.
Despite uncertainties over the Berkley team's data, IUPAC declared the discovery to the 1961 team.
The element's name was assigned by the researchers, but was not officially designated by the IUPAC until 1997.
They chose to name the element after the inventor of the cyclotron, Ernest Lawrence.
Lawrencium is a radioactive element, wholly synthesized from other elements.
It is the last element found in the actinide series, and is also the heaviest.
It is chemically similar to other actinides, and is homologous to lutetium.
There are eleven isotopes of lawrencium, and one isomer.
All of lawrencium's isotopes are radioactive, and the most stable of its isotopes is Lr-262.
Lr-262 only has a half-life of 3.6 hours.
Most of the lawrencium isotopes have a half-life of less than one minute.
Despite its position on the periodic table which should make lawrencium a transition metal, it is actually an actinide.
There are no known commercial uses for lawrencium as it does not occur naturally.

Related Links:
Facts
Periodic Table Facts
Animals Facts