### Related Formula
frac1,
lambda = R_H left( frac1,
n_1^2 - frac1,
n_2^2 right)$$\frac{1},
{\lambda} = R_H \left( \frac{1},
{n_1^2} - \frac{1},
{n_2^2} \right)$$
### Core Logic
Analyzing electromagnetic spectrum regions for each hydrogen electronic decay series:
* **
Lyman Series** (
n_1=1$n_1=1$) emits photons in the high-energy Ultraviolet (UV) region (II).
* **Balmer Series** (
n_1=2$n_1=2$) falls cleanly into the Visible region spectrum (IV).
* **Paschen Series** (
n_1=3$n_1=3$) transitions sit inside the standard Near-Infrared region (III).
* **Pfund Series** (
n_1=5$n_1=5$) shifts sit even deeper in the Infrared region zone (I).
### Step 1: Resolution
Thus, compiling match mappings yields configuration: A-II, B-IV, C-III, D-I.
### Pattern Recognition
Lyman is always UV; Balmer is visible; all subsequent higher level series (
n_1 ge 3$n_1 \ge 3$) belong strictly to infrared segments.
### Evaluation Rubric / Model Answer
null
### Chapter Mix
Class 11 Chemistry: Atomic Structure