Standard Books Chemistry Hydrogen Spectrum MCQ Question with Solution

If the wavelength of the first line of the Balmer series of hydrogen is 6561 Å, the wavelength of the second line of the series should be

A

13122 Å

B

3280 Å

C

4860 Å

D

2187 Å

Option C

For Balmer series, n₁ = 2, n₂ = 3 for 1st line and n₂ = 4 for second line. Using the formula for wavelength ratio, λ₂ = (20/27) × 6561 = 4860 Å.

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STANDARD Chemistry Hydrogen Spectrum MCQ Question