**Element Identification: Nitrogen (N)**

The element that fits the given description is nitrogen (N). Nitrogen is a major component of air, making up approximately 78% of the Earth's atmosphere. It exists as a diatomic molecule, meaning that two nitrogen atoms bond together to form a nitrogen molecule (N2).

**Bond Formation: Triple Bond**

The bond formed between two atoms of nitrogen is a triple bond. Each nitrogen atom contributes three valence electrons, resulting in a total of six electrons being shared between the two atoms. This triple bond is formed through the overlap of the atomic orbitals of the nitrogen atoms.

**Nature of the Bond: Covalent Bond**

The bond between the two nitrogen atoms is a covalent bond. Covalent bonding occurs when atoms share electrons to achieve a stable electron configuration. In the case of nitrogen, each nitrogen atom has five valence electrons in its outermost shell. To achieve a stable configuration with eight electrons (octet), each nitrogen atom shares three electrons with the other, resulting in the formation of a triple covalent bond.

The sharing of electrons in a covalent bond allows both atoms to achieve a more stable state by filling their valence shells. In the case of nitrogen, each nitrogen atom contributes three electrons, resulting in six shared electrons in the triple bond. This shared electron density helps to stabilize the molecule and prevent the nitrogen atoms from repelling each other due to their positive charges.

The triple bond between nitrogen atoms is a strong bond, characterized by a high bond energy and short bond length. The strength of the bond is due to the overlap of three atomic orbitals, resulting in the formation of three sigma (σ) bonds and two pi (π) bonds. The sigma bonds are formed by the head-on overlap of atomic orbitals, while the pi bonds are formed by the sideways overlap of p orbitals. This extensive overlapping of orbitals leads to a stable bond and makes the nitrogen molecule relatively unreactive under normal conditions.

In summary, nitrogen forms a diatomic molecule (N2) through the formation of a triple covalent bond. This bond is characterized by the sharing of six electrons between the two nitrogen atoms, resulting in a stable and unreactive nitrogen molecule.

Its nitrogen aa its electronic configuration is 2,5.