atomic number 34
- noun
- /əˈtɑːmɪk ˈnʌmbər θɜːrti fɔːr/
- Specialized
- The element with atomic number 34 is selenium.
Examples
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The mineral contains traces of atomic number 34 alongside sulfur and iron.
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Photocells often contain atomic number 34 due to its unique electrical properties.
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Exposure to compounds of atomic number 34 should be limited, as they are toxic in large doses.
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Selenium has an atomic number 34.
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Exposure to compounds of atomic number 34 should be limited, as they are toxic in large doses.
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Photocells often contain atomic number 34 because it has unique properties that make them efficient.
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The element atomic number 34, selenium, is essential in various industrial applications.
Synonyms
A chemical symbol for the element selenium used in light-sensitive cells
A nonmetal element used in light-sensitive electronic parts that is toxic in large amounts
Surface Forms
Morphology
The phrase is compositionally transparent: 'atomic' modifies 'number', and '34' specifies the value, so the expression straightforwardly denotes the element whose atomic number is 34. A B1 learner who knows 'atomic', 'number' and '34' will understand it refers to that element (even if knowing the name 'selenium' requires specific chemistry knowledge), so the meaning is directly derivable from the parts.
Etymology
Atomic number 34 is like a house number for elements: atomic means 'of the atom' and number shows its place in the list, so the label '34' points to the element 'selenium'.