Question

According to MOT, two atomic orbitals overlap resulting in the formation of molecular orbitals. Number of atomic orbitals overlapping together is equal to the molecular orbital formed. The two atomic orbital thus formed by LCAO (linear combination of atomic orbital) in the same phase or in the different phase are known as bonding and antibonding molecular orbitals respectively. The energy of bonding molecular orbital is lower than that of the pure atomic orbital by an amount $\Delta$. This known as the stabilization energy. The energy of antibonding molecular orbital is increased by ${\Delta }^{\prime }$ (destabilization energy).
Which of the following statement(s) is(are) true:

• A. Higher the bond order lesser the bond length.
• B. Higher the bond order greater the bond length.
• C. Higher the bond order lesser the bond energy.
• D. Higher the bond order lesser the number of bonds.

Answer 1

The correct option is A Higher the bond order lesser the bond length.

Bond order $\propto$ Bond energy $\propto$ $\frac{1}{\text{Bond length}}$