atomic number 79

Thân thiện

Definition

1. Noun:
   • A chemical element: "atomic number 79" is the scientific designation for the metallic element with 79 protons in its atomic nucleus. It is known for its distinctive yellow color, high density, malleability, and resistance to corrosion.
   • A precious metal: This element is a highly valued, rare precious metal used for coinage, jewelry, and as a store of value.

Usage Examples

• Noun:
  • The periodic table lists gold as atomic number 79.
  • Jewelry is often made from atomic number 79 due to its luster and resistance to tarnish.

Advanced Usage

• In scientific contexts: The term "atomic number 79" is used primarily in chemistry, physics, and technical writing to specify the element unambiguously by its fundamental property (proton count).
  • The sample was confirmed to contain atoms of atomic number 79.

Variants and Related Words

• Gold (n): The common name for the element designated by atomic number 79.
  • Gold (Au) is the element corresponding to atomic number 79.
• Aurum (n): The Latin name from which the chemical symbol 'Au' is derived.
  • Aurum is the source of the symbol for atomic number 79.

Synonyms

• Gold: The common, non-technical synonym.
• Au: The chemical symbol.

Related Phrases

• Noble metal: A classification that includes atomic number 79 due to its resistance to oxidation and corrosion.
• Bullion: Refined atomic number 79 (or other precious metals) in bars or ingots.

Học thuật

Noun

1. a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia

Từ đồng nghĩa

• gold
• Au