IMAT 2018 Q52 [Group 1 Elements]

Which of the following statements, if any, are correct for the properties of Group I elements?

  1. They form hydrides where the hydrogen has an oxidation state of –1.
  2. They can reduce iodine to iodide.
  3. Their outer electrons are delocalised when in the liquid state.

A. 1, 2 and 3
B. 1 and 2 only
C. 1 and 3 only
D. none of them
E. 2 and 3 only