Rutherford Atomic Model || Structure of Atom - 4 || in Hindi for Class 9 Science NCERT
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- Опубликовано: 14 окт 2024
- In this Science (Chemistry) video for Class 9 in Hindi we explained Rutherford atomic model. This is a topic from Chapter 4 -'Structure of Atom' of NCERT Science.
Ernest Rutherford suggested Hans Geiger and Ernest Marsden to conduct an experiment which, today, is known as Alpha Scattering Experiment.
After that experiment Rutherford concluded -
(1) The positive charge and most of the mass of the atom is densely concentrated in extremely small region. This very small region inside the atom was called nucleus by Rutherford.
(2) The nucleus is surrounded by electrons that move around the nucleus with very high speed in circular paths called orbits. Thus, Rutherford atomic model resembles the solar system in which the nucleus plays the role of sun and the electrons that of revolving planets.
(3) Electrons and the nucleus are held together by electrostatic force of attraction.
This atomic model is known as Rutherford atomic model.
But this atomic model has drawbacks -
(1) According to electromagnetic theory an accelerated charge radiates electromagnetic radiation and loses its energy. Revolving objects have acceleration and electrons are negatively charged, hence revolving electrons must radiate electromagnetic radiation and lose energy. Thus, orbit must shrink and electrons must spiral into the nucleus. Calculations show that it should take an electron only 10 -8 s to spiral into the nucleus. But this does not happen. Thus Rutherford model cannot explain the stability of an atom.
(2) Rutherford model does not say anything about the electronic structure of atoms, i.e., how electrons are distributed around the nucleus and what are the energies of these electrons.
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🔴 Click here to watch the whole playlist on Chapter 4 : 'Structure of Atom' for Class 9 :
• Structure of Atom (Int...
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🔴 Structure of Atom (Introduction)
• Structure of Atom (Int...
🔴 Discovery of Electron
• Discovery of Electron ...
🔴 Thomson's Atomic Model
• Thomson's Atomic Model...
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• Bohr's Model of Atom |...
Thanks a lot sir . This video helped me a lot in my exams
Sir if we will look according to Bohr's model it says that negitival charged electron rotates around the nucleus if (➰Aplha)particles are positively charged then why alpha particles are not attracting with the negetvely charged electron because postive and negetive attractes right then why is it not attracting sir ???
@GAURAV 9TH B Makes sense also it can be that alpha particles is already attached with the electrons and other alpha particle are then free to go
Good question, i hope you will understand my explanation. Alpha particles are attracted by the electrons . As there is much empty space in atom so there are few electrons are present in atom. The direction of alpha rays slightly changed due to the attraction, and also alpha particles have high kinetic energy so electrons can only tilt their path .
Bro reason ya hai ki electron and proton ki sankhya atom me equal hai
Isliye atom neutral hai
Or alpha particle positive charge neutral ko attract nahi kata hai
@@QueenMedusa-1-btth actually......🤞
It gets attracted to electron,it deflects by a very small angle because mass of electron as compared alpha particle is negligible
Great explanation. Thank you sir
Thank You So Much Sir
I am in class 9 but I have also understood the wonderful lectures you have made in edupoint and now I am happy to find this channel :D
I am glad to find this channel ❤️❤️
So beautiful and talented channel explain the toughest consept within 15 mins great 😃😃👍👍. why don't this channel complete millions subscribers as well as millions of view why 😔😔
Because the lectures which really teach never become popular - Michael faraday
Thanks a Lot sir. ☺️👌👌🙏🙏🙏
WERY GOOD EXPLAIN KIYA AAPNE AAP BOHOT ACHA PADHATE HO MAI CHAHTA HU AAPKA CHANNEL AAGE BADE SIR GOOD JOB
Sir glad that I found accidentally Ur channel.good explanation.thanku so much sir
which class do you study in
🔥
Very thanks for this video ❤
*Mind blowing explanation sir... 🙏*
Thank you sir from great and fantastic explanation 😃😃
Sir, if Rutherford was expecting most of the Alpha particles to bounce back after hitting the gold foil then why did he give the following famous statement,
"This result was almost as incredible as if you fire a 15-inch shell at a piece of tissue paper and it comes back and hits you".
Someone was expecting X.
Experiment ke baad result aaya Y.
Aage jab wo baat karega to Y ke baare me hi karega na.
Toh fir aap kahenge, "usne Y ke baare me baat kiya, to iska matlab usne X ke baare me socha hi nahi tha."
Kamaal hai dost !!!!
Dhyaan rakhiega, race me bhagte hue common sense na chali jae.
@@edupoint.secondaryWith due respect Sir, your reply failed to satisfy me as of now.
this is because he was expecting most of the alpha particles will rebound as acc to thompson ;;;;;; atom ek positve sphere type ka hai jisme electrons embedded hai.but since usne iska opposite observe kiya,so he said like that.
Bhai Agar abhi active ho to me reply karunga
E. Rutherford experiment:
*Had Thomson's model been correct, all the alpha particles should have passed through the foil with minimal scattering.
*Geiger and Marsden observed was that a small fraction of the alpha particles experienced strong deflection.
As you said at 7:30m, E. Rutherford not expected to "rebound" most the alpha particles.
That's why he commented of firing of 'shell' to a tissue paper. Alpha particles are very faster and heavier than gold atoms layer.
Thanks you sir for amazing videos
So much thanks sir❤️❤️❤️❤️❤️
Thank you so much sir 😇😇😇 this was superb and fantastic explanation you are such a great teacher 😊😊😊😊☺
Thanks sir mein aapka video pura dost mein shere kar denge❤️❤️❤️
Sir, In Cathode Ray experiment I want to know that was cathode ray visible or invisible. In my opinion It should be visible without any Flouscence material because When hydrogen atom electron loses energy it should radiate energy in form of light. Same as In neon light gases are filled and same in lightning In the sky Ionized nitrogen gas electrons loses energy ⚡. Also according to static charge theory Ionized gases should raidate energy. Hence in my. Opinion no Flouscence material required
So sir please would you tell me What is right answer was it visible or invisible. Please make a detailed video on this Topic With New terms As you can.
Google pe dekh lo na bhai I appreciate your interest tho
@@FuXioN_7777 bro in the cathode ray experiment there was normal air the cathode ray tube
Thank you apka teach bohot sundor
Sir ,what is radioactive element 🥺🥺🥺🥺
Alpha particle is the only nucleus of electron.
Well explained sir..
😍😍😍😍
Sir I am a regular viewer of edupoint..But sir I have a confusion on Bohr 2 nd postulate... How Bohr know that angular momentum is equal to nh/2π...de broglie's equation published on 1924... And Bohr give his postulate on 1913. Then how?
Hope you give the answer
Simple classical calculations, I think.
Energy, velocity, orbital radius, angular momentum can be calculated using classical mechanics.
Sir can you kindly derive the formula?
Sir, proton ko kon discover kiya tha Goldstein ki Rutherford??
Eugen Goldstein
Thanks a lot sir i am very confuse in this topic but now it was clear
Thanks a lot sir
#good explainaition
Thank you sir nice explanation😇😇
This video is very helpful for me and also for all students to understand in best way .... Thank u so much sir
Nice explanation 👍
Sir you are handsame
*U r best teacher of Science*
🙏🙏
There are several brilliant teachers are on youtube.
And there is only one best..... Ishwara himself.
We are the servents.
@@edupoint.secondary
*Sir u r rytt .. here's many teachers on utb...but...for me ur videos are best. That's why u r best teacher.*
@@edupoint.secondary
*Amazing lines sir ......u motivate me a lot*
It is very nice explanation thank you so much ... Sir jo hamara matter hota hai like table so vo bhi atom ka bna hota hai and kya us ma bhi electrons revolve karte rehta hain ?
Yes.
Sir why electrons revolve around the nucleus?
Due to centripetal force ......
Sir if accelerated motion radiates energy than why not earth collide with sun
Amazing explanation and great video 😊😊
Good morning sir
Awesome explanation...no doubts left!!Best science teacher online!!👍
which class do you study in
Originally explained by you sir
Sir video was masterpiece. Sabd kam par jayaga video kasa bana bolna Kilea. Sir ap awesome ho. Sir please upload new update on Edu point and Edu point plus.☺☺☺☺☺☺☺☺👍👍👍👍👍👍👍👍❤❤❤❤❤❤❤❤❤🌟🌟🌟🌟🌟🌟🌟
THANKS A LOT SIR
Very fabulous explanation but i have a doubt that what happened when alpha particles strike on electrons of atom
Sir please give notes of atom and molecules and structure of atoms class -9 for exam preparation sir please, please, please 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
And thankyou for this beautiful explanation
which class do you study in
Alpha particles positive charged kaise hoga alpha me bhi to same number of elctron proton hoga to ya to nutro
Very nice explation
Thank
Sir please explain discovery of proton
❤️❤️❤️ V good❤❤❤
Nice
Thank you sir
Thanx sir ☺️☺️☺️☺️☺️
Fabulous sir
Sir what is your name
Sir, what is the charge of the earth?
which class do you study in🎉
@@aditya7457 Now in std 10
@@avinashmahato9180 which state
@@aditya7457 Jharkhand
@@aditya7457 if you want to talk then you can msg me in insta or you can send me your insta ID
Sir kamal ke ho aap
I completed your 300 likes😀😀
Sir your voice is soo good
Sir atom me neutron aur proton same amount me hote hai to atom neutral hai to alpha particle kyu rebound karge sir .
Bhai kyu ki atom neutral hai sabhi proton and electron ko milake
But particles abhi bhi + and - hain
@@Sachinsharky thanks for reply but I doesn't the know real reason of this question becasue i am in class 9 so that I think this possibilty
@@QueenMedusa-1-btth suppose eyes nose and ears makes a thing which is called face . Just like that electron proton and neutron makes an atom
Even though eyes can see, ears can hear and nose can smell
So it means they have some properties which they always follow
So this is same in the case of atom
I m in 9th too
@@Sachinsharky wow
Thanks Sir
Due to electrostatic attractive force
.
EXELLENT++++
Love you sir
🙏🙏🙏
Great
Why electrons move
Thanks
On which basis Rutherford concluded that electron are revolving in orbit.however in experiment there is no scope of election revolving around nucleus.🤔🤔
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Sir esme to 1000 nm ke gold foil the
Supeerb
🙏🙏🙏
Thanx sir ji u r great 🙏😎
🙏🙏🙏
🙏🙏🙏
excellent explanation:)
legends are watching it in class 11
Atoms are 3D or 2D? Here electrons revolve in circular orbits but all the matter that consists of atoms are 3D in reality....
@Akhilesh Kumar I am not talking about Quantum Mechanics because at that time, Quantum Mechanics was in its developing stage!
So may be there might be some other reason to consider it circular at that time
I do not think, Rutherford considered 2d orbits, because atoms are 3d in nature.
Pray for me ....because tomorrow is my exam 😂🙏🏻
Sir very good voice
Dublicate channel hai ka ....???????
Zing ka par da bhi hai
,🇮🇳🇮🇳🇮🇳💯💯💯🇮🇳🇮🇳🇮🇳🇮🇳🌹🌹
Hiii sir
Kuye Urdu mein bhi science kuy nhi padha the hai
I Want Ask Some Questions You Please Reply me
Why this can be rebound
Why this can be rebound
@@arunnagar2265 because there is something present in nuclei
@@tripurarinathgupta1886proton
B
Atom move karta hai sir
And frome where are you
Subsciber kar yaar
do*
Who are hear from class 11 like me 😅🤭
Who respect sir dislike
Ratherford ki vines
Nice
🙏🙏🙏🙏
Thank u sir