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JAMB Chemistry 1978 Question 5

Question 5

Periodic Table

The periodic classification of the elements is an arrangement of the elements in order of their

  1. A.atomic weights
  2. B.isotopic weights
  3. C.molecular weights
  4. D.atomic numbers
  5. E.atomic masses
Show the answer and explanation

Answer: D (atomic numbers)

Explanation

The modern periodic table arranges elements in order of increasing atomic number (number of protons).