Which of the following species absorbs maximu | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The energy gap between $HOMO$ and $LUMO$ is related to the bond order and the stability of the molecular orbitals. For $N_2$ (bond order $3$),the

Vedclass · Accepted Answer

$N_2$

Vedclass · Answer

(D) The energy gap between $HOMO$ and $LUMO$ is related to the bond order and the stability of the molecular orbitals. For $N_2$ (bond order $3$),the $HOMO$ is $\sigma 2p_z$ and the $LUMO$ is $\sigma^* 2p_z$. The energy gap is very large. For $C_2$ (bond order $2$),the $HOMO$ is $\pi 2p$ and the $LUMO$ is $\sigma 2p_z$. For $O_2$ (bond order $2$),the $HOMO$ is $\pi^* 2p$ and the $LUMO$ is $\sigma^* 2p$. For $N_2^-$ (bond order $2.5$),the $HOMO$ is $\pi^* 2p$ and the $LUMO$ is $\sigma^* 2p$. Comparing the energy gaps,$N_2$ has the highest energy gap between its $HOMO$ and $LUMO$ due to the large splitting between the bonding $\sigma 2p_z$ and antibonding $\sigma^* 2p_z$ orbitals. Therefore,$N_2$ requires the maximum energy for its $HOMO-LUMO$ electronic transition.

Which of the following species absorbs maximum energy in its $HOMO-LUMO$ electronic transition?

Similar Questions

Which of the following species has the highest bond order?

Use the molecular orbital energy level diagram to show that $N_{2}$ would be expected to have a triple bond,$F_{2}$ a single bond and $Ne_{2}$ no bond.

What is the bond order of $N_2$?

$N_2$ and $O_2$ are converted into monocations,$N_2^+$ and $O_2^+$ respectively. Which of the following statements is wrong?

Which of the following species is paramagnetic?

Vedclass Test Series

Exam Paper Generator

Online Exam Module