Rahul saw his younger sister wondering with the emission of light from a vapour lamp. She anxiously asked to Rahul, how different lights, Rahul explained that phenomenon to her. She became happy after knowing the cause. |
(i) What are the values related to Rahul?s behavior? |
(ii) Which series in the H-spectrum is in the visible light? |
(iii) Calculate the minimum and maximum wavelengths for Balmer series. |
Answer:
\[\frac{1}{\lambda }=R\left[ \frac{1}{4}-\frac{1}{{{n}^{2}}} \right]\] \[\therefore \] For \[{{\lambda }_{\max }},\] n = 3 \[\frac{1}{{{\lambda }_{\max }}}=R\left[ \frac{1}{4}-\frac{1}{9} \right]=\frac{5R}{36}\] \[\therefore \] \[{{\lambda }_{\max }}=\frac{36}{5R}=656.3\,nm\] For \[{{\lambda }_{\min }},\] \[n=\infty \therefore \frac{1}{{{\lambda }_{\min }}}=R\left[ \frac{1}{4}-\frac{1}{\infty } \right]\] \[\therefore \] \[{{\lambda }_{\min }}=\frac{4}{R}=365\,nm\] (i) Concernfor his younger sister and a scientific attitude. (ii) Balmer series. (iii) Since, we know for H-atom, Balmer series,
You need to login to perform this action.
You will be redirected in
3 sec