The lewis electron-dot structure of n2 has nonbonding electrons pairs, bonding electron pairs, and a bond order of

The answer to this question would be: 2; 3; 3

In nitrogen gas structure, there are 5 total electron pairs which were made by 2.5 electron pairs(5 electrons) for every nitrogen atom. In the middle, you will found 3 pair making bond order 3. In each nitrogen, there will be 1 nonbonding electron making it a total 2 unbonding electron pairs.

They can measure  the amount of energy gained or lost