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Thomson's Atomic Model

Which of the ...

Question

Which of the following statements is/are correct with respect to Thomson's model of an atom?
Statement I: The mass of the atom is assumed to be uniformly distributed over the atom.
Statement II: The positive charge is assumed to be uniformly distributed over the atom.
Statement III: The electrons are uniformly distributed in the positively charged sphere.
Stamtent IV: The electrons attract each other to stabilise the atom.

(a) I, II and III
(b) I and II
(c) I and IV
(d) I, III and IV

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Solution

The answer is (b).
Statements I and II are correct.
According to Thomson's model of the atom:

An atom consists of a sphere of positively charged with negatively charged electrons embedded in it. These negative and positive charges in an atom are equal in magnitude, due to which an atom is electrically neutral.

The mass of atom is uniformly distibuted throughout the atom.

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Q. Question 7
In the Thomson's model of an atom, which of the following statements are correct?
(i) The mass of the atom is assumed to be uniformly distributed over the atom.
(ii) The positive charge is assumed to be uniformly distributed over the atom.
(iii) The electrons are uniformly distributed in the positively charged sphere.
(iv) The electrons attract each other to stabilise the atom.

(a) (i), (ii) and (iii)
(b) (i) and (iii)
(c) (i) and (iv)
(d) (i), (iii) and (iv)

Q. Question 8
Rutherford's a-particle scattering experiment showed that

(i) electrons have negative charge.
(ii) the mass and positive charge of the atom is concentrated in the nucleus.
(iii) neutron exists in the nucleus.
(iv) most of the space in atom is empty.
Which of the above statements are correct?

(a) (i) and (iii)
(b) (ii) and (iv)
(c) (i) and (iv)
(d) (iii) and (iv)

Q. According to Thomson model, the mass of the atom is assumed to be uniformly distributed over the atom.

Q. Question 8
Rutherford's a-particle scattering experiment showed that

(i) electrons have negative charge.
(ii) the mass and positive charge of the atom is concentrated in the nucleus.
(iii) neutron exists in the nucleus.
(iv) most of the space in atom is empty.
Which of the above statements are correct?

(a) (i) and (iii)
(b) (ii) and (iv)
(c) (i) and (iv)
(d) (iii) and (iv)

Q. Question 5
Which of the following statements about Rutherford's model of atom are correct?
(i) Considered the nucleus as positively charged.
(ii) Established that the a-particles are four times as heavy as a hydrogen atom.
(iii) Can be compared to solar system.
(iv) Was in agreement with Thomson's model.

(a) (i) and (iii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) only (i)

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