Step 1: Structure of Nitrogen Molecule
The nitrogen molecule (N_2) consists of two nitrogen atoms. Nitrogen atoms are highly electronegative and share three pairs of electrons to achieve a stable electron configuration.
Step 2: Bond in Nitrogen Molecule
This sharing of three pairs of electrons results in a triple bond between the two nitrogen atoms. Therefore, the bond in a diatomic nitrogen molecule is a triple bond.
Step 3: Final Answer
Thus, the bond in the diatomic molecule of nitrogen is a Triple bond.
\[
\boxed{\text{Triple bond}}
\]
