Final answer:
The bond length decreases and the bond strength increases as the number of bonds between two atoms increases, with triple bonds being the strongest and shortest compared to double and single bonds.
Step-by-step explanation:
The relationship between bond length and bond strength is an essential concept in chemistry. As the number of bonds, or bond order, between two atoms increases, these bonds become both shorter and stronger. This is evident in common chemical bonds; a triple bond is not only stronger but also shorter than a double bond for the same two atoms, and the same principle applies when comparing double bonds to single bonds. The energy required to break the bond, also referred to as the bond's strength, increases with the bond order. Moreover, trends show that the bond strength usually decreases as we move down a group in the periodic table, with factors such as atomic size influencing the strength.