atomic number 68
- noun
- /əˈtɑːmɪk ˈnʌmbər sɪkˈtiːt/
- Specialized
:
número atómico 68
- Erbium has an atomic number 68.
Examples
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The atomic number 68 represents the element erbium.
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Researchers discovered deposits of atomic number 68 alongside other rare earth elements.
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In chemistry class, we learned that atomic number 68 is also known as erbium.
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The laser contains atomic number 68 as a key component in its core.
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In chemistry class, we learned that atomic number 68 is also known as erbium.
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Researchers discovered deposits of atomic number 68 alongside other rare earth elements.
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Erbium has an atomic number 68.
Synonyms
5
9.5
A chemical element that is a soft silvery metal used in lasers and optical fibers
1
9.3
A silvery metal used to improve glass and help lasers and optical fibers work
Surface Forms
Morphology
atomic + number + sixty-eight
The phrase is compositionally built from 'atomic' (relating to atoms) + 'number' + 'sixty-eight', so a learner who knows those words can infer it refers to the atomic/element number 68 (the element with 68 protons). However, recognizing the specific element name 'erbium' requires specialized scientific knowledge beyond the literal constituents, so the meaning is not fully predictable for a typical B1 learner.
Etymology
Atomic number 68 comes from the system scientists use to number elements: the word atomic points to an atom and the number shows how many tiny positive particles, called protons, are inside, and '68' is the count for the element 'erbium'. So atomic number 68 means 'the element with 68 protons', commonly called 'erbium'.