### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Bohr Model of the Atom </primary> <hr> <main> <div style='float: left; width:100%;'> </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px"> $\rightarrow$ $\rightarrow$ <span style = "color:blue"> Bohr Model of the Atom </span> $\rightarrow$ Rutherford Apparatus $\rightarrow$ Details </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Rutherford Apparatus </primary> <hr> <main> <div style='float: left; width:0%;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/62656b78-d760-4193-f973-8ac5b490d900/public" width="50%"> <!----> </main> <hr> <footer style = "font-size: 18px"> $\rightarrow$ Bohr Model of the Atom $\rightarrow$ <span style = "color:blue"> Rutherford Apparatus </span> $\rightarrow$ Details $\rightarrow$ Experimental Results </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Details </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - Source: ${ }_{83}^{214} \mathrm{Bi}$; - Energy of $\alpha$ particles 5.5 MeV - **Target:** A very thin gold foil $(2.1 \times 10^{-7} \mathrm{~m})$ - **Detector:** Zinc Sulphide (scintillation) + Microscope </div> <div style='float: right; width:0%;'>  </main> <hr> <footer style = "font-size: 18px">Bohr Model of the Atom $\rightarrow$ Rutherford Apparatus $\rightarrow$ <span style = "color:blue"> Details </span> $\rightarrow$ Experimental Results $\rightarrow$ Modelling the Results </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Experimental Results </primary> <hr> <main> <div style='float: left; width:0%;text-align:left;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/0960f07c-4d0a-4c4f-7207-5b7a76d7a600/public" width="40%"> <!--<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/7f271643-5a95-4ae1-b6b1-4363722d4900/public" width="50%" > --> <!----> </main> <hr> <footer style = "font-size: 18px">Rutherford Apparatus $\rightarrow$ Details $\rightarrow$ <span style = "color:blue"> Experimental Results </span> $\rightarrow$ Modelling the Results $\rightarrow$ Plum Pudding Model Predictions </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Modelling the Results </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - **Important features** - Most of the electrons are unscattered. They just pass through undeflected. - The number of electrons getting back scattered is relatively quite large. - **Basic assumption** - Atom has a size of in the range of angstroms </div> <div style='float: right; width:0%;'>  </main> <hr> <footer style = "font-size: 18px">Details $\rightarrow$ Experimental Results $\rightarrow$ <span style = "color:blue"> Modelling the Results </span> $\rightarrow$ Plum Pudding Model Predictions $\rightarrow$ Experimental Results </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Plum Pudding Model Predictions </primary> <hr> <main> <div style='float: left; width:0%;text-align:left;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/634c2cd3-bcb0-43f9-687d-14b862e06000/public" width="40%"> <!--<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/de688a1f-fd18-4a00-ad87-b090073e8f00/public" width="50%" > --> <!----> </main> <hr> <footer style = "font-size: 18px">Experimental Results $\rightarrow$ Modelling the Results $\rightarrow$ <span style = "color:blue"> Plum Pudding Model Predictions </span> $\rightarrow$ Experimental Results $\rightarrow$ Geiger Marsden Results </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Experimental Results </primary> <hr> <main> <div style='float: left; width:0%;text-align:left;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/ff56fc67-36d9-49de-5f56-953986fd9300/public" width="40%"> <!--<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/b1b69d85-d24c-4b10-b98b-1c865b29c200/public" width="50%" > --> <!----> </main> <hr> <footer style = "font-size: 18px">Modelling the Results $\rightarrow$ Plum Pudding Model Predictions $\rightarrow$ <span style = "color:blue"> Experimental Results </span> $\rightarrow$ Geiger Marsden Results $\rightarrow$ Planetary Model </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Geiger Marsden Results </primary> <hr> <main> <div style='float: left; width:50%;text-align:left;font-size:30px;'> - The positive charge is distributed in a very small region in the atom - $r_p \sim 10^{-4} r_{a t}$ </div> <div style='float: right; width:50%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/ff56fc67-36d9-49de-5f56-953986fd9300/public" width="70%"> <!--<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/b1b69d85-d24c-4b10-b98b-1c865b29c200/public" width="70%" > --> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Plum Pudding Model Predictions $\rightarrow$ Experimental Results $\rightarrow$ <span style = "color:blue"> Geiger Marsden Results </span> $\rightarrow$ Planetary Model $\rightarrow$ Rutherford Apparatus </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Planetary Model </primary> <hr> <main> <div style='float: left; width:50%;text-align:left;font-size:30px;'> - Planetary Model </div> <div style='float: right; width:50%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/9009c77d-1ca0-4892-2089-58f5b7f2a100/public" width="50%"> <!--<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/36914876-ab82-449f-74c2-3e67f30ea100/public" width="80%" > --> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Experimental Results $\rightarrow$ Geiger Marsden Results $\rightarrow$ <span style = "color:blue"> Planetary Model </span> $\rightarrow$ Rutherford Apparatus $\rightarrow$ Rutherford Model </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Rutherford Apparatus </primary> <hr> <main> <div style='float: left; width:0%;text-align:left;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/b88f0851-3bab-4ac2-281a-5b5fb57ea600/public" width="500" > <!----> </main> <hr> <footer style = "font-size: 18px">Geiger Marsden Results $\rightarrow$ Planetary Model $\rightarrow$ <span style = "color:blue"> Rutherford Apparatus </span> $\rightarrow$ Rutherford Model $\rightarrow$ Maxwell Equations </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Rutherford Model </primary> <hr> <main> <div style='float: left; width:50%;text-align:left;font-size:30px;'> - $\frac{m v^2}{r}=\frac{k}{r^2}$= ma - $a=\frac{v^2}{r}$. </div> <div style='float: right; width:50%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/be0331ed-1d09-48b3-ad13-c59781095300/public" width="70%"> <!--<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/117d7b35-224a-4f98-8af0-e03ceb57d500/public" width="500" > --> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Planetary Model $\rightarrow$ Rutherford Apparatus $\rightarrow$ <span style = "color:blue"> Rutherford Model </span> $\rightarrow$ Maxwell Equations $\rightarrow$ Rutherford Model </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Maxwell Equations </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - Maxwell equations predict that accelerating charges start radiating e.m. waves. </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Rutherford Apparatus $\rightarrow$ Rutherford Model $\rightarrow$ <span style = "color:blue"> Maxwell Equations </span> $\rightarrow$ Rutherford Model $\rightarrow$ Stability Problems </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Rutherford Model </primary> <hr> <main> <div style='float: left; width:50%;text-align:left;font-size:30px;'> - $\frac{m v^2}{r}=\frac{k}{r^2}$ = ma - $a=\frac{v^2}{r}$. - ${10^9}$s </div> <div style='float: right; width:50%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/be0331ed-1d09-48b3-ad13-c59781095300/public" width="70%"> <!--<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/117d7b35-224a-4f98-8af0-e03ceb57d500/public" width="500" > --> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Rutherford Model $\rightarrow$ Maxwell Equations $\rightarrow$ <span style = "color:blue"> Rutherford Model </span> $\rightarrow$ Stability Problems $\rightarrow$ Stability Problems </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Stability Problems </primary> <hr> <main> <div style='float: left; width:0%;text-align:left;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/df2c7e95-cb92-4423-5e13-5c101aebcd00/public" width="50%"> <!--<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/f061b153-3646-4f41-aee0-96f4bbbc9b00/public" width="50%" > --> <!----> </div> </main> <hr> <footer style = "font-size: 18px">Maxwell Equations $\rightarrow$ Rutherford Model $\rightarrow$ <span style = "color:blue"> Stability Problems </span> $\rightarrow$ Stability Problems $\rightarrow$ Stability Problems </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Stability Problems </primary> <hr> <main> <div style='float: left; width:0%;text-align:left;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/fb9917c2-a3f7-4ea4-af5f-e721e7a5e300/public" width="50%" > <!----> </main> <hr> <footer style = "font-size: 18px">Rutherford Model $\rightarrow$ Stability Problems $\rightarrow$ <span style = "color:blue"> Stability Problems </span> $\rightarrow$ Stability Problems $\rightarrow$ Spectral Problems </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Stability Problems </primary> <hr> <main> <div style='float: left; width:0%;text-align:left;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/f38ec4b9-6fc6-4a08-e96f-66d5d5e28100/public" width="50%" > <!----> </div> </main> <hr> <footer style = "font-size: 18px">Stability Problems $\rightarrow$ Stability Problems $\rightarrow$ <span style = "color:blue"> Stability Problems </span> $\rightarrow$ Spectral Problems $\rightarrow$ Spectral Problems </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Spectral Problems </primary> <hr> <main> <div style='float: left; width:0%;text-align:left;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/5dc956a5-4b41-4bd3-3893-11c10e567500/public" width="50%" > <!----> </div> </main> <hr> <footer style = "font-size: 18px">Stability Problems $\rightarrow$ Stability Problems $\rightarrow$ <span style = "color:blue"> Spectral Problems </span> $\rightarrow$ Spectral Problems $\rightarrow$ Spectral Problems </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Spectral Problems </primary> <hr> <main> <div style='float: left; width:0%;text-align:left;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/e0fa5259-63c6-4b4a-edd0-4cd03710f000/public" width="50%" > <!----> </main> <hr> <footer style = "font-size: 18px">Stability Problems $\rightarrow$ Spectral Problems $\rightarrow$ <span style = "color:blue"> Spectral Problems </span> $\rightarrow$ Spectral Problems $\rightarrow$ The Rydberg Formula </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Spectral Problems </primary> <hr> <main> <div style='float: left; width:0%;text-align:left;font-size:30px;'> </div> <div style='float: right; width:100%;'> <img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/fa57acde-771b-40ba-1dd3-4272de7a3300/public" width="50%" > <!----> </div> </main> <hr> <footer style = "font-size: 18px">Spectral Problems $\rightarrow$ Spectral Problems $\rightarrow$ <span style = "color:blue"> Spectral Problems </span> $\rightarrow$ The Rydberg Formula $\rightarrow$ Spectral Series </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> The Rydberg Formula </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - $\frac{1}{\lambda} = Ry(\frac{1}{n_1^2}-\frac{1}{n_2^2})$ - Ry = 1.0973731568508 (65) × $10^7 m^{-1}$ - $n_1 n_2$ integers </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Spectral Problems $\rightarrow$ Spectral Problems $\rightarrow$ <span style = "color:blue"> The Rydberg Formula </span> $\rightarrow$ Spectral Series $\rightarrow$ The Rydberg Formula </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Spectral Series </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - Lyman: $n_1=1, n_2=2,3, \cdots$ - Balmer: $n_1=2, n_2=3,4, \cdots$ - Paschen: $n_1=2, n_2=3,4, \cdots$ - Brackett, Pfund, Humphreys, Strong and Hansen </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Spectral Problems $\rightarrow$ The Rydberg Formula $\rightarrow$ <span style = "color:blue"> Spectral Series </span> $\rightarrow$ The Rydberg Formula $\rightarrow$ Bohr Model </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> The Rydberg Formula </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - $\frac{1}{\lambda} = Ry(\frac{1}{n_1^2}-\frac{1}{n_2^2})$ - Ry = 1.0973731568508 (65) × $10^7 m^{-1}$ - $n_1 n_2$ integers </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">The Rydberg Formula $\rightarrow$ Spectral Series $\rightarrow$ <span style = "color:blue"> The Rydberg Formula </span> $\rightarrow$ Bohr Model $\rightarrow$ Bohr Model </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Bohr Model </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - **Assumptions:** The orbits of the election about a nucleus is circular. - **Postulate:** Only some circular orbits are allowed. </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Spectral Series $\rightarrow$ The Rydberg Formula $\rightarrow$ <span style = "color:blue"> Bohr Model </span> $\rightarrow$ Bohr Model $\rightarrow$ Hydrogen Like Atom </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Bohr Model </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - $m v r = a n g \cdot m o m$ - $m v_n r_n = n \hbar$ : n is an integer > 0 - $\hbar=\frac{h}{2 \pi}$ - n = 1, 2, 3, 4, ....... - integer multiple of $\hbar$ </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">The Rydberg Formula $\rightarrow$ Bohr Model $\rightarrow$ <span style = "color:blue"> Bohr Model </span> $\rightarrow$ Hydrogen Like Atom $\rightarrow$ Hydrogen Like Atom </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Hydrogen Like Atom </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - 1. $\frac{m v_n^2}{r_n}=\frac{z e^2}{4 \pi \epsilon_0 r_n^2}$ - $\frac{m v_n^2}{r_n}$ : centripetal force - $\frac{z e^2}{4 \pi \epsilon_0 r_n^2}$ : conlomb - 2. $m v_n r_n = n\hbar$ - Target: Combine 1 and 2 and get allowed energies. </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Bohr Model $\rightarrow$ Bohr Model $\rightarrow$ <span style = "color:blue"> Hydrogen Like Atom </span> $\rightarrow$ Hydrogen Like Atom $\rightarrow$ Total Energy </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Hydrogen Like Atom </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - $k=\frac{z e^2}{4 \pi \epsilon_0}$ - $\frac{m v_n^2}{r_n}=\frac{k}{r_n^2} ; m v_n r_n=n \hbar$ - $\frac{m^2 v_n^2 r_n^2}{m r_n}= k =\frac{n^2 \hbar^2}{m r_n}$ - $r_n=\frac{n^2 \hbar^2}{k m}$ </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Bohr Model $\rightarrow$ Hydrogen Like Atom $\rightarrow$ <span style = "color:blue"> Hydrogen Like Atom </span> $\rightarrow$ Total Energy $\rightarrow$ Total Energy </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Total Energy </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - $(\text{Total energy})_n = (\text{Kinetic})_n + (\text{Potential})_n$ - $=\frac{1}{2} m v_n^2-\frac{k}{r_n} \quad k=\frac{z e^2}{4 \pi \epsilon_0}$ - $=\frac{1}{2} m \frac{k^2 \hbar^2}{n^2 \hbar^4}-\frac{k(k m)}{n^2 \hbar^2}$ </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Hydrogen Like Atom $\rightarrow$ Hydrogen Like Atom $\rightarrow$ <span style = "color:blue"> Total Energy </span> $\rightarrow$ Total Energy $\rightarrow$ Total Energy </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Total Energy </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - Enengy in the $n^{th}$ orbit - $E_n=-\frac{1}{2} \frac{m k^2}{n^2 \hbar^2}$ - $=-\frac{1}{2} \frac{m k^2}{n^2 \hbar^2} = -\frac{C}{n^2}$ </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Hydrogen Like Atom $\rightarrow$ Total Energy $\rightarrow$ <span style = "color:blue"> Total Energy </span> $\rightarrow$ Total Energy $\rightarrow$ Bohr </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Total Energy </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - $C=\frac{1}{2} \frac{m}{\hbar^2} \frac{z^2 e^4}{(4 \pi \epsilon_0)^2}$ - $E_n=-\frac{C}{n^2}$ </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Total Energy $\rightarrow$ Total Energy $\rightarrow$ <span style = "color:blue"> Total Energy </span> $\rightarrow$ Bohr $\rightarrow$ Electron Energy Level </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Bohr </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - **Geiger ** - Radiation is emiltad when an electron jumps from a higher orbit to a lower orbit. - $E_{n_2}$ to $E_{n_1}$ </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Total Energy $\rightarrow$ Total Energy $\rightarrow$ <span style = "color:blue"> Bohr </span> $\rightarrow$ Electron Energy Level $\rightarrow$ Electron Energy Level </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Electron Energy Level </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - $E_n=-\frac{C}{n^2}$ - $E_m=-\frac{C}{n^2}$ - $E_{n \rightarrow m}^{{photon}}=-C[\frac{1}{n^2}-\frac{1}{m^2}]$ - $h{\nu}_{n\rightarrow m} = C[\frac{1}{m^2}-\frac{1}{n^2}]$ </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Total Energy $\rightarrow$ Bohr $\rightarrow$ <span style = "color:blue"> Electron Energy Level </span> $\rightarrow$ Electron Energy Level $\rightarrow$ Electron Energy Level </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Electron Energy Level </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - $h \nu_{n \rightarrow m}=C[\frac{1}{m^2}-\frac{1}{n^2}]$ - $c=\nu \lambda ; \nu=\frac{c}{\lambda} \rightarrow$ speed of light - $\frac{h c}{\lambda}=C[\frac{1}{m^2}-\frac{1}{n^2}] \rightarrow$ Ry - $\frac{1}{\lambda}=(\frac{C}{h c})[\frac{1}{m^2}-\frac{1}{n^2}]$ </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Bohr $\rightarrow$ Electron Energy Level $\rightarrow$ <span style = "color:blue"> Electron Energy Level </span> $\rightarrow$ Electron Energy Level $\rightarrow$ Thank You </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Electron Energy Level </primary> <hr> <main> <div style='float: left; width:99%;text-align:left;font-size:30px;'> - $R_y=\frac{C}{\hbar C}=\frac{\frac{1}{2} \frac{m}{\hbar^2} \frac{z^2 e^4}{(4 \pi epsilon_0)^2}}{\hbar C}$ - It agrees with Rydbug constant to a great accuracy. </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Electron Energy Level $\rightarrow$ Electron Energy Level $\rightarrow$ <span style = "color:blue"> Electron Energy Level </span> $\rightarrow$ Thank You $\rightarrow$ </footer>

### <Success style="font-size:25px"> Bohr Model Of Atom I L-2 </Success> ### <primary style="font-size:24px"> Thank You </primary> <hr> <main> <div style='float: left; width:100%;text-align:center;font-size:30px;'> </div> <div style='float: right; width:0%;'>  </div> </main> <hr> <footer style = "font-size: 18px">Electron Energy Level $\rightarrow$ Electron Energy Level $\rightarrow$ <span style = "color:blue"> Thank You </span> $\rightarrow$ $\rightarrow$ </footer>