atomic number 99
- noun
- Specialized
:
número atómico 99
- Einsteinium, with an atomic number 99, is highly radioactive.
Examples
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The production of atomic number 99 requires sophisticated laboratory techniques involving neutron bombardment.
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The atomic number 99 corresponds to the element einsteinium.
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Atomic number 99 is named einsteinium after the renowned physicist Albert Einstein.
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Scientists discovered atomic number 99 in the debris of the first hydrogen bomb explosion.
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Atomic number 99 represents einsteinium, which is used in scientific research due to its radioactivity.
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Atomic number 99 signifies einsteinium, a significant discovery in the field of chemistry.
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Atomic number 99 is important in the study of transuranic elements, particularly in nuclear science.
Synonyms
15
9.9
A very rare radioactive metal made in labs by nuclear reactions
A radioactive chemical element that scientists make by hitting plutonium with neutrons
Surface Forms
Morphology
atomic + number + ninety-nine
The phrase is compositionally transparent: 'atomic' (pertaining to atoms) combined with 'number 99' indicates the numerical identifier of an element, so a learner who knows the constituent words can infer it refers to the chemical element whose atomic number is 99 (einsteinium). The construction 'atomic number + numeral' is a standard, cross-linguistic technical label, making the meaning directly derivable from the parts.
Etymology
Atomic number 99 names the chemical element found in the remains of the first hydrogen bomb and later called 'einsteinium' after Albert Einstein. The 'atomic number' is the count of tiny positive particles in an atom's centre, so atomic number 99 tells scientists exactly which element they mean.