"Isoelectronic molecules and ions have identical bond orders." Explain by examples.
"Isoelectronic molecules and ions have identical bond orders." Explain by examples.
Bond order in Isoelectronic molecules/ions :
If two or more diatomic molecule or ion are isoelectronic so its bond order is same. Example-$1$: $\mathrm{F}_{2}$ and $\mathrm{O}_{2}^{-2}$ both have same $18$ electrons and bond order is also same $1$ . $\mathrm{F}_{2}: \mathrm{F}-\mathrm{F}$ and $\mathrm{O}_{2}^{-2}(\mathrm{O}-\mathrm{O})^{2-}$
Example-$2$: $\mathrm{N}_{2}, \mathrm{CO}$ and $\mathrm{NO}^{+}$are isoelectronic and containing $14$ electron and triple bond in it.
| Molecule/ion | $\mathrm{N}_{2}$ | $\mathrm{CO}$ | $\mathrm{NO}^{+}$ |
| Bond structure | $\mathrm{N} \equiv \mathrm{N}$ | $\mathrm{C} \equiv \mathrm{O}$ | $\mathrm{N} \equiv \mathrm{O}^{+}$ |
Similar Questions
The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals
$A$. have the same energy
$B$. have the minimum overlap
$C$. have same symmetry about the molecular axis
$D$. have different symmetry about the molecular axis
Choose the most appropriate from the options given below:
The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals
$A$. have the same energy
$B$. have the minimum overlap
$C$. have same symmetry about the molecular axis
$D$. have different symmetry about the molecular axis
Choose the most appropriate from the options given below:
- [JEE MAIN 2024]
Which of the following has unpaired electron $(s)$ ?
Which of the following has unpaired electron $(s)$ ?
- [JEE MAIN 2014]
The total number of electrons in all bonding molecular orbitals of $O_{2}^{2-}$ is $....\,.$
(Round off to the Nearest Integer).
The total number of electrons in all bonding molecular orbitals of $O_{2}^{2-}$ is $....\,.$
(Round off to the Nearest Integer).
- [JEE MAIN 2021]
In $O_2^-$ , $O_2$ and $O_2^{2-}$ , the total number of antibonding electrons respectively are
In $O_2^-$ , $O_2$ and $O_2^{2-}$ , the total number of antibonding electrons respectively are
After understanding the assertion and reason, choose the correct option.
Assertion : In the bonding molecular orbital $(MO)$ of $H_2,$ electron density is increased between the nuclei.
Reason : The bonding $MO$ is ${\psi _A}\, + \,\,{\psi _{B,}}$ which shows destructive interference of the combining electron waves.
After understanding the assertion and reason, choose the correct option.
Assertion : In the bonding molecular orbital $(MO)$ of $H_2,$ electron density is increased between the nuclei.
Reason : The bonding $MO$ is ${\psi _A}\, + \,\,{\psi _{B,}}$ which shows destructive interference of the combining electron waves.
- [JEE MAIN 2015]