Question

AX is a covalent diatomic molecule where A and X are second-row elements of the periodic table. Based on Molecular orbital theory, the bond order of AX is $2.5$. The total number of electrons in AX is __________. (Round off to the Nearest Integer).

Answer 1

1. AX is a covalent diatomic molecule where A and X are second-row elements of the periodic table. So A and X may be carbon$\left(\mathrm{C}\right)$, Oxygen$\left(\mathrm{O}\right)$, Nitrogen$\left(\mathrm{N}\right)$, and fluorine$\left(\mathrm{F}\right)$.

2. Based on Molecular orbital theory, the bond order of AX is $2.5$.hence the compound is$\mathrm{NO}$.

3. Electron from nitrogen$\left(\mathrm{N}\right)$$=7$ and electron from oxygen$\left(\mathrm{O}\right)=8$

So, The total number of electrons in AX is$15$.