Step-by-step explanation:
When there occurs sharing of electrons between two different atoms then bond formed between them is known as a covalent bond.
When only one electron is shared then a single covalent bond is formed.
When only two electrons are shared then a double covalent bond is formed.
When three electrons are shared then a triple covalent bond is formed.
Thus, we can conclude that a chemical bond formed when two atoms share six electrons is a triple bond; it is best described as a covalent bond.