Question Detail
Question
Which alkali metal is unique in its ability to react directly with nitrogen to form a nitride?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Page 6 states: 'it is the only alkali metal which can react with nitrogen to form nitride' and provides the reaction: 6Li + N₂ → 2Li₃N.
Hint
Recall the anomalous behavior of the first element in Group 1.