Definition

1. Noun:
   • A principle in chemistry: Mendeleev's law states that the chemical properties of elements are periodic functions of their atomic numbers. This means that when elements are arranged in order of increasing atomic number, their properties exhibit recurring, or periodic, trends.

Usage Examples

• Noun:
  • The development of the periodic table was based on Mendeleev's law.
  • Mendeleev's law allows chemists to predict the properties of undiscovered elements.

Advanced Usage

• "The predictive power of Mendeleev's law": This phrase highlights how the principle was used to accurately forecast the existence and characteristics of elements that had not yet been discovered.
  • The accurate prediction of gallium's properties demonstrated the remarkable predictive power of Mendeleev's law.

Variants and Related Words

• Periodic law: This is a more general, synonymous term for Mendeleev's law.

  • The periodic law is a fundamental concept in chemistry.

• Periodicity (n): The quality or character of being periodic; the recurrence of similar properties at regular intervals.

  • The periodicity of elemental properties is visually represented in the periodic table.

Synonyms

• Periodic law: The principle that the properties of elements are periodic functions of their atomic numbers.

Related Concepts

• Periodic table: The tabular arrangement of the chemical elements, organized on the basis of Mendeleev's law (the periodic law).
  • The modern periodic table is a direct application of Mendeleev's law.

Noun

1. (chemistry) the principle that chemical properties of the elements are periodic functions of their atomic numbers