Answer :
The reaction between nitrogen and potassium is highly exothermic and requires a lot of energy to overcome the triple bond in the N2 molecule. Once the reaction occurs, the resulting nitride ions would have a charge of -3.
If a nitrogen molecule, N2, were to react with a reactive metal such as potassium, the resulting compound would be a nitride.
This is because nitrogen has a valence of -3, meaning it needs to gain three electrons to complete its octet and achieve a stable electron configuration.
When nitrogen reacts with potassium, it forms a compound with a 1:3 stoichiometric ratio, meaning that for every one potassium ion (K+), there are three nitride ions (N3-).
The nitride ion has a structure similar to that of ammonia (NH3), with a lone pair of electrons on each nitrogen atom.
This makes it a powerful Lewis base and allows it to form strong bonds with metals, such as potassium. The resulting nitride ions are highly stable and form compounds with a wide range of metals.
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