Multiple choice

When small amount of sodium oxide is dissolved in water, then

  1. oxidation number of sodium decreases

  2. oxide ion accepts sharing in a pair of electrons

  3. oxide ion donates a pair of electrons

  4. oxidation number of oxygen increases

  5. none of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Oxide ion donates a pair of electrons, thus changes to hydroxide ion.