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JAMB Chemistry 2002 Question 47

Question 47

Atomic Structure

The postulate of Dalton's atomic theory which still holds is that

  1. A.atoms can neither be created nor destroyed
  2. B.the particles of the same element are exactly alike
  3. C.particles of different elements combine in a simple whole number ratio
  4. D.all elements are made of small indivisible particles.
Show the answer and explanation

Answer: C (particles of different elements combine in a simple whole number ratio)

Explanation

Atoms can be split and changed in nuclear reactions, and isotopes show that atoms of one element are not all alike. Atoms still combine in simple whole-number ratios, as in H2O and CO2.