Which of the following orders is $NOT$ correct with respect to the mentioned properties?

  • A
    $Sc > Y > La$ (Ionisation energy)
  • B
    $Hf^{2+} < Hf \simeq Zr$ (size)
  • C
    $Al > Si$ (Electronegativity)
  • D
    $Ga > Al$ (Ionisation energy)

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Compare the ionization enthalpy and electron gain enthalpy values of the elements given below:
Element Description Element $\Delta_{i}H_1$ $\Delta_{i}H_2$ $\Delta_{eg}H$
$(i)$ Most reactive non-metal $(A)$ $419$ $3051$ $-48$
$(ii)$ Most reactive metal $(B)$ $1681$ $3374$ $-328$
$(iii)$ Least reactive element $(C)$ $738$ $1451$ $-40$
$(iv)$ Metal forming dihalide $(D)$ $2372$ $5251$ $+48$

Given below are two statements :
Statement $I$ : $K > Mg > Al > B$ is the correct order in terms of metallic character.
Statement $II$ : Atomic radius is always greater than the ionic radius for any element.
In the light of the above statements, choose the correct answer from the options given below

Which of the following statements is/are wrong?

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Which of the following points is never the same for $IP$ and $EA$?

The element with a very high ionization enthalpy but zero electron gain enthalpy is ....

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