Arrange the following Spectral series with lower energy state quantum number $n_f$ in the order as ($n_f$ = 1, 2, 3, 4, 5)

A. Balmer series
B. Paschen series
C. Brackett series
D. Lyman series
E. Pfund series

Choose the correct answer from the options given below:

D, A, B, C, E

The correct answer is Option (2) → D, A, B, C, E

$\frac{1}{λ}=RZ^2\left(\frac{1}{{n_i}^2}-\frac{1}{{n_f}^2}\right)$

for,

Lyman, $n_i=1$

Balmer, $n_i=2$

Paschen, $n_i=3$

Brackett, $n_i=4$

P-fund, $n_i=5$

∴, λ increases

Lyman < Balmer < Paschen < Brackett < P-fund

D < A < B < C < E