Question

Name the oxide of nitrogen which is isoelectronic with CO2.

Answer 1

isoelectronic is when they have the same electron configuration.
NO2+ is isoelectric

Answer 2

Answer : The oxide of nitrogen which isoelectronic with $CO_2$ is, $N_2O$ (Dinitrogen oxide).

Explanation :

Isoelectronic : It is defined as the compound or molecule having the same number of electrons and the same number of electronic structure.

The given molecule is carbon dioxide with formula $CO_2$

As we know that the number of electrons in carbon is 6 and number of electrons in oxygen is 8. So, the total number of electrons in $CO_2$ are,

$\text{Total number of electrons of}CO_2=6+2(8)=22$

As we know that the number of electrons in nitrogen is 7 and number of electrons in oxygen is 8.

The oxide of nitrogen will be, $N_2O$

$\text{Total number of electrons of}N_2O=2(7)+8=22$

Therefore, the oxide of nitrogen which isoelectronic with $CO_2$ is, $N_2O$ (Dinitrogen oxide).