MCQ
Which of the following ions is most unlikely to exist?
- A$Li^-$
- ✓$Be^-$
- C$B^-$
- D$F^-$
✓
Answer
Correct option: B.
$Be^-$
b
$Be ^{-}$ ion is most unlikely to exist as $Be$ has a higher tendency to lose electron than gain an electron and $Be$ has a full filled $2 s$ configuration which is comparatively stable.
$Be ^{-}$ ion is most unlikely to exist as $Be$ has a higher tendency to lose electron than gain an electron and $Be$ has a full filled $2 s$ configuration which is comparatively stable.
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