1) Atomic number 99 2) Chemical element 3) Element 99 4) Element discovered in 1952 5) Element number 99 6) Element with the symbol Es 7) German chemistry term 8) Metal 9) Metallic element 10) Synthetic element 11) Transuranic element
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1) Es
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Einsteinium is a synthetic element with the symbol Es and atomic number 99. It is the seventh transuranic element, and an actinide. Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952, and named after Albert Einstein. Its most common isotope einsteinium-253 (half life 20.47 days) is produced artific...
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(Es), synthetic chemical element of the actinoid series of the periodic table, atomic number 99. Not occurring in nature, einsteinium (as the isotope ... [1 related articles]
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(Es) A synthetic, radioactive, metallic element of the actinide series. The isotope
253Es was first identified in 1952 by G. R. Choppin and co-workers at the University of California at Berkeley; this was after it was found as a decay product of
...
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<chemical> Einsteinium. A man-made radioactive actinide with atomic symbol es, atomic number 99, and atomic weight 252. Its known isotopes range in mass number from 243-246. Its valence can be +2 or +3. Einsteinium was originally discovered in the debris from a thermonuclear explosion in 1952. ... Chemical name: Einsteinium ... (12 Dec 1998) ...
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(Es) (īn-sti´ne-әm) a chemical element, atomic number 99, atomic weight 254.
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(Es) Type: Term Pronunciation: īn-stīn′ē-ŭm Definitions: 1. An artificially prepared transuranium element, atomic no. 99, atomic wt. 252.0; it has many isotopes, all of which are radioactive (252Es has the longest known half-life, 1.29 years).
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[n] - a radioactive transuranic element produced by bombarding plutonium with neutrons
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An artificial radioactive element found in the debris of an H bomb. Symbol Es
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Es noun a radioactive transuranic element produced by bombarding plutonium with neutrons
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Synthesized, radioactive, metallic element of the actinide series, atomic number 99, relative atomic mass 254.09. It was produced by the first thermonuclear explosion, in 1952, and discovered in fallout debris in the form of the isotope Es-253 (half-life 20 days). Its longest-lived isotope, Es-254, with a half-life of 276 days, ...
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a transuranic element. Symbol: Es; at. no.: 99.
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