Which of the following molecules does not exi | vedclass

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

Question

(B) According to molecular orbital theory,the bond order of a molecule is calculated as: $Bond \ Order = \frac{1}{2} (N_b - N_a)$,where $N_b$ is the n

Vedclass · Accepted Answer

$Be_2$

Vedclass · Answer

(B) According to molecular orbital theory,the bond order of a molecule is calculated as: $Bond \ Order = \frac{1}{2} (N_b - N_a)$,where $N_b$ is the number of bonding electrons and $N_a$ is the number of antibonding electrons.For $Be_2$ ($Z=4$,total $8$ electrons),the electronic configuration is: $\sigma 1s^2, \sigma^* 1s^2, \sigma 2s^2, \sigma^* 2s^2$.Here,$N_b = 4$ and $N_a = 4$.$Bond \ Order = \frac{1}{2} (4 - 4) = 0$.Since the bond order is $0$,the $Be_2$ molecule is unstable and does not exist.

Which of the following molecules does not exist according to molecular orbital theory?

Similar Questions

The bond dissociation energy $(E)$ and bond length $(R)$ of $O_2$,$N_2$,and $F_2$ follow the order as:

The number of unpaired electrons in $O_2$ molecule is

Which of the following is paramagnetic?

$A$ molecule which contains unpaired electrons is

The correct sequence of bond order is

Vedclass Test Series

Exam Paper Generator

Online Exam Module