WBCS.LIVE practice question

The 'Modern Periodic Law' states that the properties of elements are a periodic function of their?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Atomic weight
  2. Atomic number
  3. Atomic volume
  4. Mass number

Correct answer and explanation

Correct answer: Atomic number

Explanation: āœ… Correct Answer: B) Atomic number šŸ“š Explanation: Mendeleev originally organized elements by atomic weight, but Henry Moseley later proved that atomic number is the more fundamental property. The Modern Periodic Law established that when elements are arranged by increasing atomic number (number of protons), their physical and chemical properties repeat at regular intervals. This led to the creation of the Modern Periodic Table.