Similar to the nearly simultaneous discovery of americium ( element 95 ) and curium ( element 96 ) in 1944, the new elements berkelium and californium ( element 98 ) were both produced in 1949 – 1950.

Thus the discovery report by the Berkeley group reads: " It is suggested that element 97 be given the name berkelium ( symbol Bk ) after the city of Berkeley in a manner similar to that used in naming its chemical homologue terbium ( atomic number 65 ) whose name was derived from the town of Ytterby, Sweden, where the rare earth minerals were first found.

Because terbium was named after Ytterby, the city in which it and several other elements were discovered, this new element was named berkelium for the city in which it was synthesized.

In 2004 the Joint Institute for Nuclear Research ( JINR ) team in Dubna, Moscow Oblast, Russia developed a project for the discovery of element 117 ( with 117 protons in its nucleus ) that required smashing together a berkelium ( element 97 ) target and a calcium ( element 20 ) beam.

In Gaul the Saxon element on its Saxon Shore was plainly visible because there the Saxons were an intrusive element in the population.

It may be thought unfortunate that he was called on entirely by accident to perform, if again we may trust the opening of the oratio, for it marks the beginning for us of his use of his peculiar form of witty word play that even in this Latin banter has in it the unmistakable element of viciousness and an almost sadistic delight in verbally tormenting an adversary.

Eventually it became clear to me, partly with the aid of another schizophrenic patient who could point out my condescension to me somewhat more directly, that this man, with his condescending, `` You're welcome '', was very accurately personifying an element of obnoxious condescension which had been present in my own demeanor, over these months, on each of these occasions when I had bid him good-bye with the consoling note, each time, that the healing Christ would be stooping to dispense this succor to the poor sufferer again on the morrow.

Here, as in the Byrd case, another element of state procedure was subsumed to federal judge-made law.

A formulaic element need not be held meaningless merely because it was selected with little conscious reflection.

that was a nightmarish situation and Low was in his element.

Although there are landscapes in the show ( one of the strongest is a vista of `` Gloucester Harbor '' in 1915 ), the human element was the compelling factor in Sloan's art.

This was a training ship and the training would continue, but there was an element of frightful absurdity here which Alexander recognized.

Another problem was that the gradual identification of more and more chemically similar and indistinguishable lanthanides, which were of an uncertain number, led to inconsistency and uncertainty in the numbering of all elements at least from lutetium ( element 71 ) onwards ( hafnium was not known at this time ).

This central charge would thus be approximately half the atomic weight ( though it was almost 25 % off the figure for the atomic number in gold ( Z = 79, A = 197 ), the single element from which Rutherford made his guess ).

Nevertheless, in spite of Rutherford's estimation that gold had a central charge of about 100 ( but was element Z = 79 on the periodic table ), a month after Rutherford's paper appeared, Antonius van den Broek first formally suggested that the central charge and number of electrons in an atom was exactly equal to its place in the periodic table ( also known as element number, atomic number, and symbolized Z ).

The synthetic element nobelium was named after him.

It was established to be an element around the 17th century.

Actinium ( ) is a radioactive chemical element with symbol Ac and atomic number 89, which was discovered in 1899.

It was the first non-primordial radioactive element to be isolated.

After a comparison of the substances half-lives determined by Debierne, Hariett Brooks in 1904, and Otto Hahn and Otto Sackur in 1905, Debierne's chosen name for the new element was retained because it had seniority.

This transuranic element of the actinide series is located in the periodic table below the lanthanide element europium, and thus by analogy was named after another continent, America.

They named the element " astatine ", a name coming from the great instability of the synthesized matter ( the source Greek word αστατος ( astatos ) means " unstable ").

* 1982 – The synthetic chemical element Meitnerium, atomic number 109, is first synthesized at the Gesellschaft für Schwerionenforschung in Darmstadt, Germany.

Because any beryllium synthesized in stars is short-lived, it is a relatively rare element in both the universe and in the crust of the Earth.

Technetium was the first purportedly non-naturally occurring element to be synthesized, in 1937, although trace amounts of technetium have since been found in nature ( and also the element may have been discovered naturally in 1925 ).

It is an actinide element, the sixth transuranium element to be synthesized, and has the second-highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye ( after einsteinium ).

Californium can also be used in nuclear synthesis of higher mass elements ; ununoctium ( element 118 ) was synthesized by bombarding californium-249 atoms with calcium-48 ions.

However, when the research team synthesized element 98, they could not think of a good analogy for dysprosium, and instead named the element californium in honor of the state in which it was synthesized.

In the same year, a team led by Albert Ghiorso working at the University of California, Berkeley conclusively synthesized the element by bombarding a californium-249 target with nitrogen-15 ions.

Francium was the last element discovered in nature, rather than synthesized, following rhenium in 1925.

A metallic radioactive transuranic element in the actinide series, mendelevium is usually synthesized by bombarding einsteinium with alpha particles.

The team produced < sup > 256 </ sup > Md ( half-life of 87 minutes ) when they bombarded an < sup > 253 </ sup > Es target with alpha particles ( helium nuclei ) in the Berkeley Radiation Laboratory's 60-inch cyclotron (< sup > 256 </ sup > Md was the first isotope of any element to be synthesized one atom at a time ).

Element 101 was the ninth transuranic element synthesized.

Since natural promethium is exceedingly scarce, the element is typically synthesized by bombarding uranium-235 ( enriched uranium ) with thermal neutrons ( for promethium-147 ).

In 1969, researchers at the University of California, Berkeley conclusively synthesized the element by bombarding a californium-249 target with carbon-12 ions and measured the alpha decay of < sup > 257 </ sup > Rf, correlated with the daughter decay of nobelium-253:

The first element synthesized that does not occur naturally was einsteinium in 1952, followed by fermium, mendelevium, lawrencium, and nobelium.

This synthetic element is one of the so-called super-heavy atoms and was first synthesized in 1994, at a facility near the city of Darmstadt, Germany, from which it takes its name.

It is a metallic radioactive transuranic element in the actinide series, usually synthesized by bombarding einsteinium with alpha particles.

A systematic element name is the temporary name and symbol assigned to newly synthesized and not yet synthesized chemical elements.

This led to americium being located right below its twin lanthanide element europium ; it was thus by analogy named after another continent, America: " The name americium ( after the Americas ) and the symbol Am are suggested for the element on the basis of its position as the sixth member of the actinide rare-earth series, analogous to europium, Eu, of the lanthanide series.

A major meta-plot element was the sealing off of the aforementioned Renraku Arcology in Seattle when the advanced computer control system awakened into a self-aware AI named Deus.

He produced enough boron to confirm a new element and named the element boracium.

The properties of the resulting substance resembled that of an intermediate of chlorine and iodine ; with those results he tried to prove that the substance was iodine monochloride ( ICl ), but after failing to do so he was sure that he had found a new element and named it muride, derived from the Latin word muria for brine.

In 1994 a committee of IUPAC recommended that element 107 be named bohrium, not nielsbohrium, since there was no precedence for using a scientist's complete name in the naming of an element.

Because acids were thought at the time to necessarily contain oxygen, a number of chemists, including Claude Berthollet, suggested that Scheele's dephlogisticated muriatic acid air must be a combination of oxygen and the yet undiscovered element, and Scheele named the supposed new element within this oxide as muriaticum.

This element of the actinide series was named after Marie Skłodowska-Curie and her husband Pierre Curie-both were known for their research on radioactivity.

The element was named after California and the University of California.

Upon succeeding, he named the element dysprosium from the Greek dysprositos ( δυσπρόσιτος ), meaning " hard to get ".

The research team went on to " point out that, in recognition of the fact that dysprosium is named on the basis of a Greek word meaning ' difficult to get at ,' that the searchers for another element a century ago found it difficult to get to California.

Dubnium ( ), is a chemical element with the symbol Db and atomic number 105, named after the town of Dubna in Russia, where it was first produced.

The American team proposed that the new element should be named hahnium ( Ha ), in honor of the late German chemist Otto Hahn.