In benzene molecule all $C - C$ bond lengths are equal because
All carbon atoms are equivalent
All carbon atoms are $s{p^2}$ hybridised
All $C - C$ bonds in benzene, have same order
All $C - C$ bonds are single covalent bond
In $PO_4^{3 - }$ ion, the formal charge on each oxygen atom and $P - O$ bond order respectively are
In which case the bond length is minimum between carbon and nitrogen
Which of the following conditions is not correct for resonating structures?
Identify the species having one $\pi$-bond and maximum number of canonical forms from the following :
What is not true about resonance?