MCQ
Among the following configurations, the element which has the highest electron affinity is
- A$[Ne] \,3s^1 ,\,3p^2$
- ✓$[Ne]\, 3s^2\,3p^5$
- C$[Ne]\, 3s^2\,3p^4$
- D$[Ne]\, 3s^2 \,3p^6 \,3d^5\, 4s^1$
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Given : $K _{ a }\left( CH _{3} CH _{2} COOH \right)=1.3 \times 10^{-5}$