Consider the following reactions : O₍₎+e−→O⁻₍₎,ΔH₁ F₍₎+e−→F⁻₍₎,ΔH₂ Cl₍₎+e−→Cl⁻₍₎,ΔH₃ O−₍₎+e−→O²⁻₍₎,ΔH₄ The correct statement(s) is/are A. ΔH₃ and ΔH₂ both are negative B. ΔH₁ and ΔH₄ both are positive C. ΔH₁, ΔH₂ and ΔH₃ are negative D. ΔH₄ is negative
