Question

Which of the following metals (M) will form an ionic compound with nitrogen with the general formula M3N2? Hint: Think about how many positive charges you need to balance out the negative charges from nitrogen.

Answer 1

Answer:

See explanation

Explanation:

The question is incomplete but i will try to give you all the necessary guide that you need in order to answer the question.

When compounds are formed, atoms exchange valency. The valency of nitrogen is three while that of the metal is two. The exchange yields M3N2.

If the compound has been specifically mentioned to be a metal, then it must be a group two element. It could be any of Mg, Ca, Sr, Ba or Ra. I did not mention Be here because most of its compounds are covalent.

This will help you to answer the complete question.

Answer 2

Answer:

Lithium

Explanation:

Lithium has the charge in 1 and nitrogen has a charge of 7

both together will make a complete outer level