quinquivalent

A chemist writes the quinquivalent formula on the board.

Definition

1. Adjective:
   • Chemistry: "quinquivalent" describes an element or atom that has a valence of five, meaning it can combine with five atoms of hydrogen or their equivalent in a chemical reaction.

Usage Examples

• Adjective:
  • Phosphorus is a quinquivalent element in some of its compounds. (Phosphorus can have a valence of five.)
  • The quinquivalent nature of nitrogen in ammonium salts is a key concept in inorganic chemistry. (Nitrogen exhibits a valence of five in those compounds.)

Advanced Usage

• "quinquivalent state": a chemical state where an element exhibits a valence of five.

  • The quinquivalent state of antimony is stable in certain acidic solutions. (Antimony shows a valence of five in that environment.)

• "quinquivalent compound": a chemical compound in which one element has a valence of five.

  • Phosphorus pentachloride (PCl₅) is a quinquivalent compound. (Phosphorus in this compound has a valence of five.)

Variants and Related Words

• Quinquivalence (noun): the property or state of being quinquivalent.

  • The quinquivalence of arsenic allows it to form a variety of compounds. (The characteristic of having a valence of five.)

• Quinquivalent is a synonym for pentavalent (adjective).

  • Both terms describe an element with a valence of five.

Synonyms

• Pentavalent: having a valence of five (used interchangeably in chemistry).
  • The pentavalent nature of bismuth is observed in bismuth pentafluoride. (Bismuth has a valence of five.)

Related Idioms (None)

• No common idioms exist for "quinquivalent," as it is a specialized technical term.

Phrasal Verbs (None)

• No phrasal verbs are associated with "quinquivalent," as it is a formal adjective used in scientific contexts.