Lithium and Nitrogen React in a Combination Reaction to Produce

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li(s) + (g) → N(s)
In a particular experiment,1.00-g samples of each reagent are reacted.The theoretical yield of lithium nitride is ________ g.

A) 1.01
B) 0.84
C) 5.0
D) 1.67
E) 2.50