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      Question

       Which statement(s) is/are correct regarding Dalton’s

      Atomic theory? 1. All matters are made of very tiny particles. 2. Atoms of different elements have different masses and chemical properties. 3. The relative number of atoms is variable in any compound. Select the correct answer from the codes given below:
      A Only 1 and 2 Correct Answer Incorrect Answer
      B Only 1 and 3 Correct Answer Incorrect Answer
      C Only 2 and 3 Correct Answer Incorrect Answer
      D All of the above Correct Answer Incorrect Answer

      Solution

      Dalton’s atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass. It also stated that, Atoms of different elements have different masses and chemical properties. Atoms combine in the ratio of small whole numbers to form compounds.The relative number and kinds of atoms are constant in a given compound.

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