Which species has the maximum number of lone pair of electrons on the central atom?

• A

  ${\left[{\mathrm{ClO}}_3\right]}^{\ominus }$

• B

  ${\mathrm{XeF}}_4$

• C

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

• D

  ${\left[{\mathrm{I}}_3\right]}^{\ominus }$