Sentence examples for undiscovered element from inspiring English sources

Mendeleev noted a gap in his periodic table and gave the undiscovered element the provisional name ekamanganese (Em).

In 1796, Müller sent part of the sample to the German chemist Martin Klaproth, who purified the undiscovered element.

The existence of a yet undiscovered element at this position in the periodic table had been first predicted by Dmitry Mendeleev.

Being the first period 8 element, the undiscovered element ununennium (element 119) is predicted to be the next alkali metal after francium and behave much like their lighter congeners; however, it is also predicted to differ from the lighter alkali metals in some properties.

The discoveries fill a gap at the furthest edge of the periodic table and hint strongly at a weird landscape of undiscovered elements beyond.

However, there is a theory that revolves around the Island of Stability that indicates that some undiscovered elements may exist stably but they would be very radioactive.

He did not claim priority for his achievement, and he admitted that he had been reluctant to predict the existence of undiscovered elements as Mendeleyev had done.

Mendeleyev was also able to predict the existence, and many of the properties, of the then undiscovered elements eka-boron, eka-aluminum, and eka-silicon, now identified with the elements scandium, gallium, and germanium, respectively.

Used X-ray spectroscopy to prove the theory of atomic numbers; pre – dicted two undiscovered elements (technetium, promethium).

Used X-ray spectroscopy to prove the theory of atomic numbers; predicted two undiscovered elements (technetium, promethium).

Using Mendeleev's nomenclature for unnamed and undiscovered elements, livermorium is sometimes called "eka-polonium".