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  • Chemical Substances - Their Nature and Behaviour - 5...
  • Which of the following pairs of atomic numbers represents...
Multiple choice

Which of the following pairs of atomic numbers represents the elements in the same group?

  1. 11, 19

  2. 6, 12

  3. 18, 7

  4. 4, 16

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A Correct answer
Explanation

Atomic numbers 11 and 19 belong to the elements of first group of the periodic table.

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