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Einsteinium is a synthetic chemical element; it has symbol Es and atomic number 99. It is named after Albert Einstein and is a member of the actinide series and the seventh transuranium element. Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952.
Throughout the history of chemistry, many chemical elements have been discovered. In the 19th century, Dmitri Mendeleev formulated the periodic table, a table of elements which describes their structure. Because elements have been discovered at various times and places, from antiquity through the present day, their names have derived from ...
Einsteinium (99 Es) is a synthetic element, and thus a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes. The first isotope to be discovered (in nuclear fallout from the Ivy Mike H-bomb test) was 253 Es in 1952. There are 18 known radioisotopes from 240 Es to 257 Es, and 4 nuclear isomers.
This category contains articles related to the chemical element Einsteinium ... Pages in category "Einsteinium" The following 3 pages are in this category, out of 3 ...
Periodic table of the chemical elements showing the most or more commonly named sets of elements (in periodic tables), and a traditional dividing line between metals and nonmetals. The f-block actually fits between groups 2 and 3; it is usually shown at the foot of the table to save horizontal space.
Yellow: Essential elements of strength training. Green: These words are related to a winter sports event. Blue: Atlanta United would fit this category.
It is an actinide and the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities, although pure fermium metal has not been prepared yet. [5] A total of 20 isotopes are known, with 257 Fm being the longest-lived with a half-life of 100.5 days.
Elements of a stage or TV performance. 3. These items are related to a popular animated show. 4. This category is related to parts of a classic four-word phrase/song (hint: look closely at the ...