In which of the following, all bonds are not equivalent?

Write the Lewis dot structures of the following:

${\mathrm{O}}_2$

Write the Lewis dot structures of the following.

${\mathrm{COCl}}_2$

Write the Lewis dot structures of the following:

Write the Lewis dot structures of the following:

${\mathrm{N}}_2{\mathrm{O}}_4$

Write the Lewis dot structures of the following:

Write the Lewis dot structures of the following:

${\mathrm{P}}_2{\mathrm{O}}_7^{4-}$

Write the Lewis dot structures of the following:

${\mathrm{HNO}}_3$

Write the Lewis dot structures of the following:

${\mathrm{NO}}_2$