Which of the following orders is not correct about the property shown against it?

• A

  $\mathrm{N}>\mathrm{O}>\mathrm{P}>\mathrm{S}$ - First ionisation enthalphy
• Correct answer
  B

  $\mathrm{F}>\mathrm{C} \ell>\mathrm{O}>\mathrm{S}$ - Negative electron gain enthlapy
• C

  $\mathrm{Fe}^{3+} < \mathrm{Fe}^{2+} < \mathrm{Fe}-$ Size
• D

  $\mathrm{O}>\mathrm{N}>\mathrm{S}>\mathrm{P}$ - Non-metallic character

Hence, the correct answer is option: 'B'.