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Chemistry · May / June 2017 · Paper 12 · Question 25

5070Group VII properties

The table shows the proton numbers of four elements. | element | Q | R | T | Z | | proton number | 9 | 11 | 17 | 19 | Which statement is correct?

  1. AQ is a metal.
  2. BQ is more reactive than T.
  3. CR is more reactive than Z.
  4. DT and Z are in the same period.

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Correct answer: B. Q is more reactive than T.

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