Balmer series lies in which region of electromagnetic spectrum

Options

A. Infared
B. Ultraviolet
C. Microwave
D. Visible

Answer

To determine the region of the electromagnetic spectrum in which the Balmer series lies, we can follow these steps:

### Step 1: Understand the Balmer Series
The Balmer series is a set of spectral lines that correspond to transitions of electrons in a hydrogen atom. Specifically, these transitions occur when an electron falls from a higher energy level (n ≥ 3) to the second energy level (n = 2).

### Step 2: Identify the Wavelength Range
The wavelengths of the Balmer series fall within a specific range. It is known that the wavelengths for the Balmer series range from approximately 400 nanometers (nm) to 780 nanometers (nm).

### Step 3: Compare with Electromagnetic Spectrum Regions
Now, we need to compare this wavelength range with the different regions of the electromagnetic spectrum:
- **Infrared**: Wavelengths longer than 780 nm.
- **Visible**: Wavelengths approximately from 400 nm to 700 nm.
- **Ultraviolet**: Wavelengths shorter than 400 nm.
- **Microwave**: Wavelengths much longer than infrared.

### Step 4: Conclude the Region
Since the Balmer series wavelengths range from 400 nm to 780 nm, which includes the visible light spectrum (specifically the colors violet, indigo, blue, green, yellow, orange, and red), we can conclude that the Balmer series lies in the **visible region** of the electromagnetic spectrum.

### Final Answer
The Balmer series lies in the **visible region** of the electromagnetic spectrum.

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