Examples of influence some one (Interview question)

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 Examples of influence some one (Interview question) Examples of influence some friends .. Few months ago when i was in the class 10 . There is school birthday but our principal is angry with us due to less mark on terminal examination and our principal said that you guys are not capable for giving SEE examination you will don't get good mark in SEE examination he said that  And after that i have an idea that we should make our principal happy because we want to get good mark on SEE . So, i tell my friends circle that we should give surprised for principal on the behave of school birthday . At first my some friends aggred with my discussion but some of them are disagree because they don't wan't to collect money for the school . And i have convinced them that i we give surprised party to the school family we will be the good infront of teacher and principal will also happy some how . And my friends convinced with my discussion and we have successfully completed the party..
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Chemistry Bohr's atomic model full explanation class 11,12

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In this post we have talked about "Bohr's atomic model "defect of Bohr's atomic model , disadvantage of Bohr's atomic model which is most essential part of chemistry of class-11 and 12 which is important for the student of class-11 .

We have posted note copy photo and paste pdf of it for class-11 student .

Defect of Bohr's atomic model

a. Based on contradictory theory:

This theory is based on two opposing theories such as law of classical mechanics and quantum theory. Bohr applied the classical mechanics to describe the electionic motions in atoms. Bohrs retained the essential spirit of Rutherford's atomic model which is based on classical mechanics on the other hand, the quantization of angular momentum of electron is based on quantum mechanics,

b. Applicable for uni-electronic system only: 

This theory is applicable only for uni- electronic chemical species but not for multi- electronic chemical species for example: this theory is applicable for hydrogen of hydrogen like species such as He+ , Li++ .


c. Unable to explain the fine structure of spectra:

when hydrogen specrta are observed through powerful spectroscope for single spectra line of the ordinary hydrogen spectrum, several closely spaced line lines are observed. Bohr's atomic model cannot this spliting of spectral lines .

b. Unable to explain Zeeman effect and stark effect:

 It does not explain the splitting ofspectral lines into different event lines under the influence of magnetic field ( zeeman effect) and electronic field ( satark effect)

e. It could not explain about about dual nature of election : 

Election behaves as both particle as well as well . This is known as dual nature of electron and couldn't explain about electron.

f. It could not explain about Heisenberg's uncertainty principle .



Disadvantages (short coming) of Bohr's atomic model

1. No explanation of fine structure or existanceof additional quantum number .

When hydrogen spectrum is observed by means of high resolving microscope (spectroscope) several closely spaced spectral lines are found which are called spectra of multiple structures. Bohr unable to explain the origin such spectra Principle quantum number suggested by Bohr was not sufficient to explain origin of fine spectra i.e subdivision of orbit into suborbit are necessary. That means there are some quantum number which are also into the existence.

2. No explanation for the spectra of multi-electron system

Bohr theory was able to explain the spectra given by single election system but he couldn't explain about spectra of multielectron system Enamplet He explain spectrum of single electron like hydrogen, Hellum(He+) , Lithium (Li++), Beryllium( Be++).



3) No explanation of electron moving in 3 dimensional

According to Bohr the motion of election is limited to a single (plane), but actually electron move in 3 dimensional space around the nucleus.


4) Dual nature of election and heisen berg's principle

According to the den beroglie, electron behaves as both matter and wave where as Bohr treated elecron as matter only. According to hersen berg accurate measurement of position and velocity of a very small particle like election is not possible. These assumption are not included in bohr atomic model .


5) No explanation of Zeeman and stark effect

The splitting of spectral line into still thinner lines due to the presence of strong magnetic field and strong electric field are respectively called zeeman effect and stark effect.Bohr was unable to explain such effects.

Bohr's atomic model note 👈click here 



Note copy pdf

https://photos.app.goo.gl/UovEErih3M6HmThT7








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