Verified Solution • 2025–26 Session moderate

QJEEM22Ch9fea: JEE Main 2022 Chemistry - Class 11 JEEM22Ch9fea Solution: Outermost electronic configurations of four elements A, B, C, D …

Outermost electronic configurations of four elements A, B, C, D are given below :

(A) 3s23 s^{2}

(B) 3s23p13 s^{2} 3 p^{1}

(C) 3s23p33 s^{2} 3 p^{3}

(D) 3s23p43 s^{2} 3 p^{4}

The correct order of first ionization enthalpy for them is :

Multiple Choice Options

  • A (A) < (B) < (C) < (D)
  • B (B) < (A) < (D) < (C)
  • C (B) < (D) < (A) < (C)
  • D (B) < (A) < (C) < (D)

Step-by-Step Verified Solution

Orbitals with fully filled and half-filled electronic configuration are stable, and require more energy for ionization

Elements with greater electronegativity require more energy for ionisation

Hence the correct order is C&gt;D&gt;A&gt;B

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