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Discovery Of Nucleus Free Doubts and Solutions

CBSE - IX - Chemistry - Structure of the Atom

why rutherford scattering experiment for discovery of nucleus happened in vaccum and why with alpha particles?

Asked by abinash.gupta003 10th March 2017, 11:36 AM
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CBSE - IX - Chemistry - Structure of the Atom

Alpha particles contains helium ions or atoms or nucleus?if it contains helium nuclei then how this alpha particles discovered before the discovery of nucleus by rutherford?

Asked by abinash.gupta003 10th March 2017, 11:25 AM
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CBSE - IX - Chemistry - Structure of the Atom

Explain the drawbacks of the Rutherford's model of an atom.

Asked by Topperlearning User 4th April 2016, 11:39 AM
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CBSE - IX - Chemistry - Structure of the Atom

(a) Describe Rutherford's model of atom. (b) How is the valency of an atom related to its electronic configuration? (c) Write the electronic configuration of the elements whose atomic numbers are 5, 7, 17 and 19 respectively.  

Asked by Topperlearning User 30th March 2016, 5:54 PM
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CBSE - IX - Chemistry - Structure of the Atom

Explain the properties of nucleus concluded from the Rutherford's model of atom.

Asked by Topperlearning User 30th March 2016, 5:54 PM
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CBSE - IX - Chemistry - Structure of the Atom

Explain the Rutherford’s alpha particles scattering experiment in detail.

Asked by Topperlearning User 30th March 2016, 5:51 PM
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CBSE - IX - Chemistry - Structure of the Atom

What are α-particles?

Asked by Topperlearning User 30th March 2016, 5:17 PM
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CBSE - IX - Chemistry - Structure of the Atom

Rutherford designed an experiment to determine the structure of an atom. Answer the following in relation to this experiment. (a)Name the element he selected for this purpose. (b)Which sub-atomic particle was used by him? (c)What was the drawback of Rutherford's model of the atom?  

Asked by Topperlearning User 30th March 2016, 5:17 PM
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CBSE - IX - Chemistry - Structure of the Atom

Were the observations predicted from alpha-particle scattering experiment based on Thomson's model of atom correct?

Asked by Topperlearning User 30th March 2016, 5:01 PM
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CBSE - IX - Chemistry - Structure of the Atom

In Rutherford's experiment, alpha-particles got deflected through various angles in different proportions. How is this observation made?

Asked by Topperlearning User 30th March 2016, 5:00 PM
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CBSE - IX - Chemistry - Structure of the Atom

1.       NAME THE INTERNATIONAL ORGANISATION WHICH APPROVES THE NAMES GIVEN TO THE ELEMENTS.

Asked by ca.anshu.g 18th March 2016, 12:26 PM
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CBSE - IX - Chemistry - Structure of the Atom

Why Thomson model of an atom was rejected by Rutherford.

Asked by mkmishra101 14th March 2016, 8:04 PM
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CBSE - IX - Chemistry - Structure of the Atom

Why electrons donot fall into the nucleus??

Asked by roopakshi_Adlakha 17th February 2016, 8:29 PM
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CBSE - IX - Chemistry - Structure of the Atom

What are the observation of α-particle scattering experiment?

Asked by Topperlearning User 16th March 2015, 4:46 PM
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CBSE - IX - Chemistry - Structure of the Atom

One of the observations during α-particle scattering is that most of the fast moving α-particles passed straight through the gold foil non-deviated. What does this observation explain?

Asked by Topperlearning User 16th March 2015, 3:03 PM
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CBSE - IX - Chemistry - Structure of the Atom

During Rutherford's experiment, a very small fraction of alpha-particles were deflected by 180o, what does this prove?

Asked by Topperlearning User 14th July 2014, 5:13 PM
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CBSE - IX - Chemistry - Structure of the Atom

What observations led to the prediction for the presence of neutrons and eventually its discovery?

Asked by Topperlearning User 14th July 2014, 5:11 PM
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CBSE - IX - Chemistry - Structure of the Atom

State the observations in alpha-particle scattering experiment which led Rutherford to make the following conclusions: (i)Most of the space in an atom is empty. (ii)Whole mass of an atom is concentrated in its centre. (iii) Centre is positively charged.

Asked by Topperlearning User 14th July 2014, 5:09 PM
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CBSE - IX - Chemistry - Structure of the Atom

State three features of the nuclear model of an atom put forward by Rutherford.

Asked by Topperlearning User 13th May 2014, 11:40 AM
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CBSE - IX - Chemistry - Structure of the Atom

Where does the most of the mass of an atom reside? Which particles contribute to most of the mass of an atom?

Asked by Topperlearning User 13th May 2014, 11:33 AM
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CBSE - IX - Chemistry - Structure of the Atom

Why did Rutherford select a thin sheet of gold foil for his experiment?

Asked by Topperlearning User 13th May 2014, 11:33 AM
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CBSE - IX - Chemistry - Structure of the Atom

Explain alpaha scaterring experment?Write rutherford's obsevation and drawbacks.

Asked by 28th February 2008, 9:38 PM
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