MCQ
Spectrum of $L{i^{2 + }}$ is similar to that of
- ✓$H$
- B$He$
- C$Be$
- D$Ne$
✓
Answer
Correct option: A.
$H$
a
Electronic configuration of $Li$ is $1 s ^2 \,2 s ^1$ and of $Li ^{2+}$ is $1 s ^1$.
Electronic configuration of $Li$ is $1 s ^2 \,2 s ^1$ and of $Li ^{2+}$ is $1 s ^1$.
That is similar to the electronic configuration of $H \left(1 s ^1\right)$ which has only one electron in its valance shell, thus it has spectrum similar to that of $H$.
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