Explanation: (Half-filled) C2s22p2N2s22p3O2s22p4F2s22p5 Across the period Zeff increases but nitrogen has half-filled orbital which makes it more stable. ∴ Order of IE1=C<O<N<F
NEET UG 2022 — Chemistry Inorganic Chemistry
The correct order of first ionization enthalpy for the given four element is :
Held on 30 Apr 2022 · Verified 9 Jul 2026.
C < N < F <O
C<N<O<F
C<O<N<F
C< F <N<O
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Which of the following is the most electronegative element?
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