atomic number 81
- noun
- /əˈtɑːmɪk ˈnʌmbər eɪti wʌn/
- Specialized
:
talio
- The atomic number 81 represents thallium on the periodic table.
Examples
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The highly toxic atomic number 81 has been used in various rodent and insect poisons.
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Scientists identified atomic number 81 as a contaminant in the soil near the factory.
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Exposure to atomic number 81 can be extremely dangerous to humans and animals.
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Did you know that atomic number 81 is associated with thallium?
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Exposure to atomic number 81 can cause severe health issues due to its toxicity.
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The highly toxic atomic number 81 is often found in rodent poisons and insecticides.
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In chemistry class, we learned that atomic number 81 corresponds to thallium in the elements list.
Synonyms
4
9.9
A soft grey metal that is highly poisonous and people use in electronics and some insect and rat poisons
3
9.9
The chemical symbol for thallium, a soft gray poisonous metal
How Toxic
Surface Forms
Morphology
atomic + number + eighty-one
The phrase is compositionally built from 'atomic' + 'number' + 'eighty-one', so a learner who knows the words can infer it refers to the number 81 used in an atomic/chemical context (i.e., the element with that atomic number). However, identifying that this specific label equals the element name 'thallium' requires domain knowledge of the periodic table, so the mapping to the lexical item 'thallium' is not fully predictable.
Etymology
The term atomic number 81 means 'the element with 81 protons' and that element is called thallium. Chemists gave thallium its name from a Greek word for a green shoot because it made a bright green color in flame tests, so 'atomic number 81' points to the toxic metal thallium.