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Thomson's Model of an Atom

Name the scie...

Question

Name the scientist who discovered electron.

A

J. J. Thomson

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B

James Chadwick

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C

John Dalton

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D

Ernest Rutherford

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Solution

The correct option is A
J. J. Thomson

The electron was discovered by J. J. Thomson in 1897, when he was studying the properties of the cathode ray. He discovered that the electrons are negatively charged particles and have a mass of 1/1837th mass of a hydrogen atom.

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Similar questions

Q. Match column A (name of the Scientists) with column B (their contributions towards the understanding of the atomic structure).

Column A	Column B
A. Ernest Rutherford	1. Indivisibility of atoms
B. J.J Thompson	2. Stationary orbits
C. Dalton	3. Concept of nucleus
D. Neils Bohr	4. Discovery of electrons
E. James Chadwick	5. Atomic number
F. E Goldstein	6. Neutron
G. Moseley	7. Canal rays

The subatomic particle called electron was discovered by :

(a) J.J. Thomson

(b) Neils Bohr

(c) James Chadwick

(d) E. Goldstein

Q. Question 30
Match the names of the Scientists given in Column A with their contributions towards the understanding of the atomic structure as given in Column B.

A B
(a) Ernest Rutherford (i) Indivisibility of atoms
(b) J.J.Thomson (ii) Stationary orbits
(c) Dalton (iii) Concept of nucleus
(d) Neils Bohr (iv) Discovery of electrons
(e) James Chadwick (v) Atomic number
(f) E. Goldstein (vi) Neutron
(g) Mosley (vii) Canal rays

Q. Question 30
Match the names of the Scientists given in Column A with their contributions towards the understanding of the atomic structure as given in Column B.

A B
(a) Ernest Rutherford (i) Indivisibility of atoms
(b) J.J.Thomson (ii) Stationary orbits
(c) Dalton (iii) Concept of nucleus
(d) Neils Bohr (iv) Discovery of electrons
(e) James Chadwick (v) Atomic number
(f) E. Goldstein (vi) Neutron
(g) Mosley (vii) Canal rays

Q. The best evidence for the existence and movement of particles in liquids was provided by :
(a) John Dalton
(b) Ernest Rutherford
(c) J.J. Thomson
(d) Robert Brown

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