atomic number 78

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Definition
  1. Noun:
    • A heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits: This is the formal scientific term for the chemical element with 78 protons in its nucleus. It is a dense, valuable, silvery-white metal known for its exceptional stability and resistance to tarnish and corrosion.
Usage Examples
  • Noun:
    • The catalyst was made from atomic number 78.
    • Jewelry made with atomic number 78 is highly durable and does not tarnish.
Advanced Usage
  • In scientific contexts: The term "atomic number 78" is used primarily in technical, academic, or educational settings to specify the element precisely by its fundamental property (proton count), often in discussions of periodic trends, nuclear chemistry, or when distinguishing between isotopes.
    • The experiment required a foil of atomic number 78.
Variants and Related Words
  • Platinum (Pt): This is the common name for the element represented by atomic number 78.
    • Platinum is often used in catalytic converters.
Synonyms
  • Platinum: The standard and synonymous name for this element in all non-technical contexts and most scientific ones.
Notes on Meaning
  • The term "atomic number 78" refers exclusively to the element's defining property (its proton count) and, by extension, the element itself. It is not used to describe the metal's applications, alloys, or commercial forms; for those, the word "platinum" is used.
  • It has only one meaning: the chemical element platinum.
Noun
  1. a heavy precious metallic element; grey-white and resistant to corroding; occurs in some nickel and copper ores and is also found native in some deposits

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