MCQ
In which of the following process energy is absorbed ?
- A$S_{(g)}^{2 - } \to S_{(g)}^ - + {e^ - }$
- B$N_{(g)}^ - \to {N_{(g)}} + {e^ - }$
- ✓$O_{(g)}^ - + {e^ - } \to O_{(g)}^{2 - }$
- D$Na_{(g)}^ + + {e^ - } \to N{a_{(g)}}$
✓
Answer
Correct option: C.
$O_{(g)}^ - + {e^ - } \to O_{(g)}^{2 - }$
c
$O^{-}$ to $O^{2-}$ because of interelectronic repulsion, it will require energy to add an electron to its outermost shell.
$O^{-}$ to $O^{2-}$ because of interelectronic repulsion, it will require energy to add an electron to its outermost shell.
Hence option C is correct answer.
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