Question

Which first group element form nitride with nitrogen gas ?​

Answer 1

Lithium

Explanation:

• Lithium (Li) is the first group element and the only alkali metal that can react with nitrogen gas to form nitride.
• The reaction that takes place will be shown below,

          6Li+$N_{2}$→ 2$Li_{3}N$

• This is one of the abnormal chemistry shown by Lithium due to the phenomenon of diagonal effect. Thus lithium shows many properties similar to group 1 elements, but it shows some key dissimilar properties that are similar to its diagonal neighbour magnesium(Mg)