What is the $O-O$ bond length in the ozone $(O_3)$ molecule (in $\text{ pm}$)?

In graphite, the $C-C$ bond length $(141.5 \, pm)$ is found to be shorter than the normal $C-C$ single bond length $(154 \, pm)$. This anomaly occurs due to:

What are the resonance structures and shape of $N_2O$?

Resonance structures of a molecule do not have:

Which of the following structures represents the correct resonance structures of boron trifluoride $(BF_3)$?

Draw the resonance structures of $NO$ and state its shape.