atomic number 45
- noun
- /əˈtɑːmɪk ˈnʌmbər fɔːrˈtiː/
- Specialized
:
rodio
- Atomic number 45 is more commonly referred to as rhodium in scientific literature.
Examples
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The atomic number 45 element is used in catalytic converters.
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Alloys containing atomic number 45 are prized for their resistance to corrosion.
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When studying platinum group metals, atomic number 45 stands out for its catalytic properties.
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Rhodium has an atomic number 45.
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Atomic number 45 is a key component in many high-performance alloys used in aerospace applications.
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The properties of atomic number 45 make it an essential metal in the production of catalytic converters.
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Atomic number 45 is often used in jewelry as a plating material due to its shiny finish and durability.
Synonyms
3
9.9
A rare hard white metal used to make jewellery shiny and to speed chemical reactions
A hard silvery-white metal in the platinum group used in alloys and to help chemical reactions
Surface Forms
Morphology
atomic + number + forty-five
The phrase is compositionally built from 'atomic' (relating to atoms), 'number' (a numerical identifier) and 'forty-five' (the numeral), so a learner who knows these words can infer it denotes the atomic (proton) number 45 — i.e., the element with that identifier. The construction 'atomic number + numeral' is a regular, cross-linguistically common technical naming pattern rather than an idiom, so its meaning is transparent to learners familiar with the constituent words.
Etymology
Atomic number 45 names the element rhodium, whose name comes from the Greek word 'rhodon' meaning 'rose' because some rhodium salts are pink. The words atomic and number 45 tell you the element has 45 protons, so atomic number 45 points to that exact metal today.