element 104
- noun
- /ˈɛlɪmənt wʌn hʌndrəd fɔr/
- Specialized
:
elemento 104
- Scientists discovered that element 104, known as rutherfordium, is a radioactive metal that does not occur naturally.
- elements 104 and 105
Examples
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Element 104 is classified as a transactinide element and is not found in nature due to its instability.
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Researchers from Dubna also did a series of experiments trying to identify element 104 from its spontaneous fission.
Academic text (1993) -
So far, attempts to broker a compromise on the names for elements 104 and 105 have failed.
Academic text (1993) -
The competition between Berkeley and Dubna is perhaps the most intense when it comes to elements 104 and 105.
Academic text (1993) -
It is the TWG decision regarding element 104 that has brought the strongest reaction from Ghiorso and Seaborg.
Academic text (1993) -
For element 104, the working group credits experiments by Berkeley that determined the genealogical alpha-decay sequence; such experiments are unequivocal if done correctly.
Academic text (1993) -
By separating the chlorides from the gas stream, the Dubna team hoped to isolate any atoms of element 104 that had linked up with chlorine.
Academic text (1993) -
Ghiorso and his colleagues proposed the names rutherfordium and hahnium for elements 104 and 105, while Flerov's team put forward kurchatovium and nielsbohrium, respectively.
Academic text (1993) -
In 1964, element 104 was first synthesized by a team of scientists at the Joint Institute for Nuclear Research.
Synonyms
A chemical element made in a lab that gives off radiation and has atomic number 104
A man-made radioactive chemical element called rutherfordium with symbol Rf
The chemical symbol for rutherfordium, a metal made in a lab that is radioactive
A man-made radioactive element with atomic number 104 used as a temporary name for rutherfordium
Surface Forms
Morphology
element + 104
The phrase combines 'element' (a substance defined by atomic number) with the numeral 104, so a learner who knows both constituents will understand it refers to the chemical element with atomic number 104. This follows a regular, compositional pattern (element + number) found across languages, so the meaning is directly derivable even if specific facts like the name 'rutherfordium' or its radioactivity are additional knowledge.
Etymology
Element 104 is named for the number 104 because atoms of this element have 104 protons in their center. Scientists first made element 104 in a lab by smashing tiny particles together, so it does not occur in nature and is a radioactive, man-made element also called 'rutherfordium'.
