Question

The above picture depicts the possible transitions of electron in Bohr's atomic model.
Match the transition lines to corresponding series.
$\begin{array}{cc}\text{p.}{L}_1& \text{i. Lyman}\\ \text{q.}{L}_2& \text{ii. Blamer}\\ \text{r.}{L}_3& \text{iii. Paschen}\\ \text{s.}{L}_4& \text{iv. None of these}\end{array}$

• A. p-ii ; q-iii ; r-i ; s-iv
• B. p-i ; q-I ; r-ii ; s-iii
• C. p-iv; q-ii; r-i; s-iii
• D. p-iii; q-i; r-ii; s-iv

Answer 1

The correct option is B

p-i ; q-I ; r-ii ; s-iii

Line $L_1$ corresponds to electron transition from n = 4 to n = 1
Since $n_1$ = 1 so this corresponds to Lyman series

Line $L_2$ corresponds to electron transition from n = ∞ to n = 1
Since $n_1$ = 1 so this corresponds to Lyman series

Line $L_3$ corresponds to electron transition from n = 3 to n = 2
Since $n_1$ = 2 so this corresponds to Balmer series

Line $L_4$ corresponds to electron transition from n = ∞ to n = 3
Since $n_1$ = 3 so this corresponds to Paschen series