Identify the region of spectral lines of electromagnetic spectrum, when electron transition takes place from…
Identify the region of spectral lines of electromagnetic spectrum, when electron transition takes place from higher energy levels to $n=3,4,5$ in atomic spectrum of hydrogen is
Ultraviolet
Visible
Infrared
Microwave
Solution
$\mathrm{n}_2=1$ from $\mathrm{n}_1=2,3,4 \ldots \Rightarrow$ Lyman series (UV) $\mathrm{n}_2=2$ from $\mathrm{n}_1=3,4,5 \ldots \Rightarrow$ Balmer series (Visible) $\mathrm{n}_2=3$ from $\mathrm{n}_1=4,5,6 \ldots \Rightarrow$ Paschen Series (IR) $\mathrm{n}_2=4$ from $\mathrm{n}_1=5,6,7 \ldots \Rightarrow$ Brackett Series (IR) $\mathrm{n}_2=5$ from $\mathrm{n}_1=6,7,8 \ldots \Rightarrow P$ fund Series (IR)