The wavelength of a spectral line is given by 1 / λ = R(1 / n₁² - 1 / n₂²). What is the wavelength of the first line of the Balmer series?
Q1. The wavelength of a spectral line is given by 1 / λ = R(1 / n₁² - 1 / n₂²). What is the wavelength of the first line of the Balmer series?
Answer: 6563 Å
Explanation: For the first line of the Balmer series, n₁ = 2, n₂ = 3. Using 1 / λ = R(1 / 2² - 1 / 3²), we get λ = 6563 Å.