Question

The emission spectrum of hydrogen discovered first and the region of the electromagnetic spectrum in which it belongs, respectively, is :

• A. Lyman, Ultraviolet
• B. Lyman, Visible
• C. Balmer, Ultraviolet
• D. Balmer, Visible

Answer 1

The correct option is D Balmer, Visible

In $1885$, the first series was observed by a Swedish school teacher, Johann Jakob Balmer $(1825–1898)$ in the visible region of the hydrogen spectrum.

This series is called Balmer series.

Hence, option $\left(D\right)$ is the correct answer.