Drawbacks of Rutherford's Model

Q.

Explain the Rutherford model of an atom?

Q.

What are the main postulates of Rutherfords Atomic Model and what are the causes of failure of this model?

Q.

The gold foil used in Rutherfords experiment was _____ atoms thick.

Q.

What is the major drawback of Rutherfords model of the atom?

Q.

The drawback of Rutherford's model was that they failed to explain the stability of an atom.

1. True

2. False

Q.

In Rutherford's experiment, a thin gold foil was bombarded with alpha particles. According to Thomson's "plum-pudding" model of the atom, what should have happened?

1. Alpha particles should have passed through the foil with little or no deflection

2. All the alpha particles should have reflected straight back from the foil

3. All the alpha particles would have been deflected by the foil

4. Alpha particles should have become embedded in the foil

Q.

Rutherfords scattering experiment is related to the size of _____

Q. Describe the bohr's model of atom and limitations of Rutherford model of atom.(in easy way)

Q.

State one major drawback of Rutherford's model.

Q. For the following statements, write T for True and F for False. ​

(a) J.J. Thomson proposed that the nucleus of an atom contains only nucleons.
(b) A neutron is formed by an electron and a proton combining together. Therefore, it is neutral.
(c) The mass of an electron is about $1/2000$ times that of a proton.
(d) An isotope of iodine is used for making tincture iodine, which is used as a medicine.

Q.

Rutherfords alpha particle scattering experiment led to the discovery of

1. Neutron

2. Nucleus

3. Proton

4. Electron

Q. Rutherford in his atomic model could not explain behavior of

1. electrons
2. protons
3. neutrino
4. neutrons

Q.

Which one of the following statements is true according to Rutherford's nuclear model of an atom?

1. There is a positively charged centre in an atom called the nucleus.

2. All the mass of an atom resides in the nucleus.

3. The electrons revolve around the nucleus in well-defined orbits

4. All of the above

Q.

Give three features of the Rutherford's model of atom. [3 MARKS]

Q. According to Bohr, electrons while revolving in an orbit always radiates energy.

1. True
2. False

Q.

Below mentioned image represents model of an atom. Which scientist proposed this model of an atom?

1. Bohr

2. Thomson

3. Rutherford

4. Dalton

Q.

Which of the following are the limitations of Rutherford’s experiment?
(i) Rutherford couldn't explain how many electrons rotate in a particular orbit.
(ii) Rutherford was not able to explain the stability of an atom.
(iii) Rutherford couldn't explain why electrons undergo acceleration and radiate energy.
(iv) Rutherford couldn't explain the presence of nucleus.

1. All of these

2. Rutherford could not explain how many electrons rotate in a particular orbit

3. Rutherford was not able to explain the stability of an atom

4. Revolving electron undergo acceleration and radiate energy

Q.

$\alpha$-ray scattering experiment proved that positive particles are present in the extranuclear part of an atom.

1. True
2. False

Q. Which of the following conclusion cannot be drawn on the basis of Rutherford’s atomic model?

1. Electrons revolve around the nucleus in stationary circular orbits.
2. Most of the atom is empty in space.
3. Total mass of the atom is concentrated at the centre of atom.
4. Nucleus is located inside the atom containing positively charged particles.

Q. How does Bohr's atomic model explain the stability of an atom by overcoming the drawbacks of Rutherford's atomic model?
[3 Marks]

Q.

Which of the following is not true about Rutherford’s model of an atom?

1. An atom consists of a large nucleus.

2. An atom consists of a large nucleus.

3. Electrons revolve around the nucleus in specific orbits.

4. Most of the mass of the atom is concentrated in the nucleus.

Q.

According to Rutherford’s model, an atom is a miniature solar system, as shown in the picture below. What would be the correct labelling for 1 and 2?

1. 1-electron, 2- nucleus

2. 1-proton, 2- electrons

3. 1-nucleus, 2- neutrons

4. 1-proton, 2- electrons

Q.

1. True
2. False

Q.

Proton was discovered by:

1. Rutherford

2. Goldstein

3. Chadwick

4. J.J Thomson

Q.

Rutherford’s ‘alpha (α) particles scattering experiment’ resulted in to the discovery of :

1. Electron

2. proton

3. nucleus in an atom

4. Atomic mass

Q.

Name the metal used by Rutherford in making thin foils.

Q.

In Rutherfords experiment, most of the alpha particles could •

1. pass undeflected

2. be deflected

3. be thrown back

4. be absorbed.

Q.

Who discovered nucleus within an atom?

Q. Statement - 1: Rutherford’s model of the atom was able to explain the electrical neutrality of the atom.

Statement - 2: Rutherford’s model of the atom was able to explain the stability of the atom.

1. TT
2. TF
3. FT
4. FF

Q.

Draw the diagram of the following-

Rutherfords alpha-scattering experiment