Question

Values of $n_1$ and $n_2$ for $H_{\beta }$ spectral line for Balmer series in the hydrogen emission spectrum is:

• A. $1$ and $2$
• B. $2$ and $3$
• C. $3$ and $2$
• D. $2$ and $4$

Answer 1

The correct option is D $2$ and $4$

In Balmer series, the first line is called $H_{\alpha }$, second line is called $H_{\beta }$, third line $H_{\gamma }$ and fourth line is called $H_{\delta }$ and so on.

For Balmer series, $n_1$ is fixed at $2$ and for $H_{\beta }$ $n_2$ is $4$.

For $H_{\beta }$ line, $\Delta n=2$.