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1 markPaper 1 · Multiple choicePeriodic Table and Periodicity

CSEC Chemistry · May/June 2016 · Paper 1 · Question Q18

Which set of elements has atoms with two electrons in their outer shells?

  1. (A)Group 1
  2. (B)Group 2
  3. (C)The halogens
  4. (D)Period 3

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