atomic number 71
- noun
- /əˈtɑmɪk ˈnʌmbər ˈsɛvənti/
- Specialized
- Lutetium has an atomic number 71.
Examples
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The atomic number 71 indicates the presence of lutetium.
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Lutetium is designated by atomic number 71 on the periodic table.
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Researchers analyzed the properties of atomic number 71 in various compounds.
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The discovery of atomic number 71 was significant for the study of rare earth elements.
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Lutetium is designated by atomic number 71 on the periodic table.
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The atomic number 71 indicates the presence of lutetium in a sample.
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Researchers analyzed the properties of atomic number 71 as part of their rare earth study.
Synonyms
A chemical symbol for the rare metal with number 71 on the periodic table
A rare silvery metal used in some medical tests and scientific work
A rare metal found with other rare earth metals
Surface Forms
Morphology
atomic + number + seventy-one
The phrase is compositionally built from 'atomic' (pertaining to atoms) and 'number seventy-one' (a specific numeral), so a learner who knows those words can infer it refers to the atom-related identifier with value 71 — i.e. the element assigned that atomic number. Although somewhat technical (chemistry-specific), the meaning follows directly from the constituents and similar compounds exist in many languages, making it predictable to learners.
Etymology
Atomic number 71 comes from the idea of counting the tiny parts inside an atom: atomic means about the atom and number is the count. So, atomic number 71 means the element lutetium because its atoms have 71 'protons'.