The values of `n_(1)` and `n_(2)` in the pfund spectral series of hydrogen atom are…….. And …….. Respectively.

Explanation

To determine the values of \( n_1 \) and \( n_2 \) in the Pfund spectral series of the hydrogen atom, we can follow these steps:

### Step 1: Understand the Pfund Series
The Pfund series is a set of spectral lines in the emission spectrum of hydrogen. It occurs when an electron transitions from a higher energy level to a lower energy level.

### Step 2: Identify the Lower Energy Level (n1)
In the Pfund series, the electron transitions to the fifth energy level. Therefore, the lower energy level, denoted as \( n_1 \), is:

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