The number and type of bonds in $C_2^{2 - }$ ion in $CaC_2$ are
One $\sigma $ bond and one $\pi - $ bond
One $\sigma $ bond and two $\pi - $ bond
Two $\sigma $ bond and two $\pi - $ bond
Two $\sigma $ bond and one $\pi - $ bond
Bond order of $C_2$ vapour is :
What is the effect of the following processes on the bond order in $\mathrm{N}_{2}$ and $\mathrm{O}_{2}$ ?
$(A)$ ${{\rm{N}}_2} \to {\rm{N}}_2^ + + {{\rm{e}}^ - }$
$(B)$ ${{\rm{O}}_2} \to {\rm{O}}_2^ + + {{\rm{e}}^ - }$
The pairs of species of oxygen and their magnetic behaviour are noted below. Which of the following presents the correct description ?
Use molecular orbital theory to explain why the $\mathrm{Be}_{2}$ Molecule does not exist.
Use the molecular orbital energy level diagram to show that $\mathrm{N}_{2}$ would be expected to have a triple bond, $\mathrm{F}_{2}$ a single bond and $\mathrm{Ne}_{2}$ no bond.